[SDK] Better control of threads executed by opentelemetry-cpp #10915

Job	Run time
CMake clang 18 (maintainer mode, sync)	10m 1s
CMake gcc 14 (maintainer mode, async)	8m 46s
CMake test (without otlp-exporter)	5m 51s
CMake test (with abseil)	5m 38s
CMake clang 18 (maintainer mode, abiv2)	10m 54s
CMake clang 18 (maintainer mode, async)	9m 55s
CMake gcc 14 (maintainer mode, sync)	7m 29s
CMake msvc (maintainer mode)	8m 18s
CMake msvc (maintainer mode) with C++20	9m 29s
CMake test (with opentracing-shim)	4m 26s
CMake C++14 test(GCC)	4m 39s
CMake C++17 test(GCC)	5m 13s
CMake C++20 test(GCC)	9m 33s
CMake test (without otlp-exporter and with async export)	5m 48s
CMake C++20 test(Clang with libc++)	10m 12s
Bazel without bzlmod	17m 14s
Bazel noexcept	17m 14s
Bazel nortti	17m 43s
Bazel	17m 56s
Bazel with async export	18m 45s
Bazel valgrind	22m 12s
CMake do not install test (with otlp-exporter)	15m 10s
CMake install test (with abseil)	5m 11s
CMake test (with modern protobuf,grpc and abseil)	17m 59s
CMake test (build shared libraries with otlp-exporter and static gRPC)	15m 30s
CMake test (with otlp-exporter)	15m 50s
CMake C++23 test(Clang with libc++)	10m 4s
CMake C++23 test(GCC)	10m 1s
Plugin -> CMake	1m 19s
Bazel asan config	22m 26s
Bazel on MacOS	14m 12s
Bazel tsan config	19m 19s
Benchmark	14m 7s
Code coverage	12m 25s
Copyright	7s
DocFX check	1m 21s
Format	28s
markdown-lint	14s
misspell	4s
shellcheck	5s
W3C Distributed Tracing Validation V1	5m 34s
CMake -> exporter proto	13m 27s
Bazel Windows	36m 34s
Plugin -> CMake Windows	8m 13s
CMake (With async export) -> exporter proto	13m 47s
CMake -> exporter proto (Build as DLL)	31m 42s
	8h 32m 25s

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