Add new contracts and update existing ones with improved schemas and …

…configurations

- Introduced new contracts: burner, crypto-verify, cyberpunk, empty, floaty, hackatom, ibc-callbacks, ibc-reflect, ibc-reflect-send, nested-contracts, queue, reflect, and staking.
- Each contract includes updated README files, Cargo.toml, and Cargo.lock for dependency management.
- Enhanced schema files for better integration and functionality.
- Added integration tests for various contracts to ensure reliability and performance.
- Updated .cargo/config.toml files to standardize schema execution commands across contracts.
- Improved overall project structure and documentation for better developer experience.

contracts/README.md

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+# Example contracts
+
+Those contracts are made for development purpose only. For more realistic
+example contracts, see
+[cosmwasm-examples](https://github.com/CosmWasm/cosmwasm-examples).
+
+## The contracts
+
+Introducing the development contracts in the order they were created.
+
+1. **hackatom** is the very first development contract that was created at a
+   Cosmos Hackatom in Berlin in 2019, the event where CosmWasm was born. It is a
+   very basic escrow contract. During the years of CosmWasm development, many
+   more test cases were hacked into it.
+2. **queue** shows and tests the newly added iterator support
+   ([#181](https://github.com/CosmWasm/cosmwasm/pull/181)).
+3. **reflect** is an evolution of the
+   [mask contract](https://medium.com/cosmwasm/introducing-the-mask-41d11e51bccf),
+   which allows the user to send messages to the contract which are then emitted
+   with the contract as the sender. It later got support to handle sub messages
+   and replies ([#796](https://github.com/CosmWasm/cosmwasm/pull/796)).
+4. **staking** is a staking derivatives example showing how the contract itself
+   can be a delegator.
+5. **burner** shows how contract migrations work, which were added in CosmWasm
+   0.9 ([#413](https://github.com/CosmWasm/cosmwasm/pull/413)). It shuts down
+   the contract my clearing all state and sending all tokens to a given address.
+6. **ibc-reflect**/**ibc-reflect-send** are inspired by the idea of Interchain
+   Accounts and demonstrate the power of contract to contract IBC.
+   ibc-reflect-send receives a message on chain A and sends it to an ibc-reflect
+   instance on chain B where the message is executed.
+7. **crypto-verify** shows how to use the CosmWasm crypto APIs for signature
+   verification ([#783](https://github.com/CosmWasm/cosmwasm/pull/783)).
+8. **floaty** emits float operations when compiled to Wasm and allows us to test
+   how tooling and the runtime deal with those operations
+   ([#970](https://github.com/CosmWasm/cosmwasm/pull/970)).
+9. **cyberpunk** is an attempt to cleanup hackatom and make writing runtime
+   tests (cosmwasm-vm/wamsmvm) easier by avoid the need for the escrow setup
+   that hackatom has.
+10. **virus** is a contract that reproduces itself and does nothing useful
+    beyond that, showing how to use instantiate2 from a contract.
+11. **empty** is an empty contract that does nothing. It is used to test that we
+    can store contracts with no entry points.
+
+## Optimized builds
+
+Those development contracts are used for testing in other repos, e.g. in
+[wasmvm](https://github.com/CosmWasm/wasmvm/tree/main/testdata) or
+[cosmjs](https://github.com/cosmos/cosmjs/tree/main/scripts/wasmd/contracts).
+
+They are [built and deployed](https://github.com/CosmWasm/cosmwasm/releases) by
+the CI for every release tag. In case you need to build them manually for some
+reason, use the following commands:
+
+```sh
+# cd to the repo root first
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_burner",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/burner
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_crypto_verify",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/crypto-verify
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_cyberpunk",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/cyberpunk
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_floaty",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/floaty
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_hackatom",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/hackatom
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_ibc_reflect",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/ibc-reflect
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_ibc_reflect_send",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/ibc-reflect-send
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_queue",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/queue
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_reflect",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/reflect
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_staking",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/staking
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_virus",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/virus
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_empty",target=/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/optimizer:0.15.0 ./contracts/empty
+```
+
+## Entry points
+
+The development contracts in this folder contain a variety of different entry
+points in order to demonstrate and test the flexibility we have.
+
+| Contract    | Has `query` | Has `migrate` |
+| ----------- | ----------- | ------------- |
+| burner      | no          | yes           |
+| hackatom    | yes         | yes           |
+| ibc-reflect | yes         | no            |
+| queue       | yes         | yes           |
+| reflect     | yes         | no            |
+| staking     | yes         | no            |
+| virus       | no          | no            |

contracts/burner/.cargo/config.toml

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+[alias]
+wasm = "build --release --lib --target wasm32-unknown-unknown"
+wasm-debug = "build --lib --target wasm32-unknown-unknown"
+unit-test = "test --lib"
+integration-test = "test --test integration"
+schema = "run --bin schema"