[BUILD] Accept path list in OPENTELEMETRY_EXTERNAL_COMPONENT_PATH #8872

Job	Run time
Bazel asan config	15m 48s
Bazel noexcept	11m 55s
Bazel nortti	13m 3s
Bazel on MacOS	18m 34s
Bazel	12m 28s
Bazel with async export	12m 58s
Bazel tsan config	13m 3s
Bazel valgrind	14m 11s
Bazel with external abseil	12m 49s
Benchmark	8m 8s
CMake test (with abseil)	4m 47s
CMake clang 14 (maintainer mode, abiv2)	14m 5s
CMake clang 14 (maintainer mode, async)	14m 16s
CMake clang 14 (maintainer mode, sync)	14m 4s
CMake do not install test (with otlp-exporter)	14m 6s
CMake gcc 12 (maintainer mode, async)	8m 3s
CMake gcc 12 (maintainer mode, sync)	8m 3s
CMake install test (with abseil)	4m 50s
CMake test (with modern protobuf,grpc and abseil)	18m 36s
CMake msvc (maintainer mode)	8m 58s
CMake test (with opentracing-shim)	4m 23s
CMake test (build shared libraries with otlp-exporter and static gRPC)	13m 43s
CMake test (with otlp-exporter)	13m 53s
CMake test (without otlp-exporter)	5m 1s
CMake C++14 test(GCC)	4m 19s
CMake C++17 test(GCC)	4m 48s
CMake C++20 test(Clang with libc++)	9m 30s
CMake C++20 test(GCC)	8m 58s
CMake test (without otlp-exporter and with async export)	4m 57s
Code coverage	11m 48s
Copyright	5s
DocFX check	1m 18s
Format	19s
markdown-lint	6s
misspell	6s
Plugin -> CMake	1m 28s
CMake -> exporter proto	12m 24s
Bazel Windows	22m 1s
Plugin -> CMake Windows	6m 51s
CMake (With async export) -> exporter proto	12m 27s
CMake -> exporter proto (Build as DLL)	12m 40s
	6h 33m 50s

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