Fix failing tests

[Henry-E]

Tests should pass 100% of the time now.

Changes in file order

• Add a simple github actions file that runs the tests everything to a PR is made or commit push.
  • Maybe there's a more restrictive version of this that people prefer using.
• Use a locally stored ./admin.json keypair so that tests will automatically run.
• Obviously anyone deploying should change this.
• Uploading locally stored account files to the validator instead of fetching them from mainnet which is unreliable.
• For swap tests to pass there needs to be a 1 block delay between initing an amm and trying to swap.
• The sort function used to sort token accounts outputs incorrect ordering when the base58 lengths are different, this fixes that by compare the byte arrays instead.

No more failing tests! Also very annoying to debug this because of how anchor is not showing a proper stack trace when a program call fails. Not sure how to fix this / why that is.