[EXPORTER] Prometheus: Sanitize labels according to spec #8544

Job	Run time
CMake gcc 12 (maintainer mode, async)	11m 11s
CMake gcc 12 (maintainer mode, C++11, async)	10m 42s
CMake gcc 12 (maintainer mode, sync)	10m 25s
CMake test (without otlp-exporter)	6m 43s
CMake test (with abseil)	8m 43s
CMake clang 14 (maintainer mode, async)	20m 51s
CMake clang 14 (maintainer mode, sync)	17m 16s
CMake gcc 4.8 (without otlp exporter)	5m 49s
CMake msvc (maintainer mode)	13m 38s
CMake test (with opentracing-shim)	6m 31s
CMake test (without otlp-exporter and with async export)	8m 22s
Bazel with async export	22m 18s
Bazel	19m 59s
CMake do not install test (with otlp-exporter)	24m 29s
CMake gcc 4.8 (with otlp exporter)	14m 27s
CMake install test (with abseil)	8m 55s
CMake test (with modern protobuf,grpc and abseil)	30m 5s
CMake test (build shared libraries with otlp-exporter and static gRPC)	20m 41s
CMake test (with otlp-exporter)	24m 50s
CMake C++20 test(Clang with libc++)	17m 22s
CMake C++20 test(GCC)	12m 56s
Plugin -> CMake	1m 1s
Bazel asan config	14m 56s
Bazel noexcept	19m 20s
Bazel nortti	19m 10s
Bazel on MacOS	19m 20s
Bazel tsan config	20m 28s
Bazel valgrind	21m 47s
Bazel with external abseil	20m 50s
Benchmark	13m 9s
Copyright	7s
Format	22s
CMake -> exporter proto	17m 2s
CMake -> exporter proto (Build as DLL)	17m 11s
Code coverage	13m 20s
DocFX check	59s
markdown-lint	11s
misspell	8s
Bazel Windows	36m 44s
Plugin -> CMake Windows	9m 23s
CMake (With async export) -> exporter proto	22m 2s
	9h 43m 43s

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