[EXPORTER] Prometheus: Add unit to names, convert to word (#2213) #8786

Job	Run time
CMake clang 14 (maintainer mode, abiv2)	13m 38s
CMake clang 14 (maintainer mode, async)	14m 4s
CMake clang 14 (maintainer mode, sync)	13m 50s
CMake gcc 12 (maintainer mode, async)	7m 57s
CMake gcc 12 (maintainer mode, sync)	7m 52s
CMake test (without otlp-exporter)	4m 49s
Bazel	12m 38s
Bazel with async export	12m 51s
CMake test (with abseil)	4m 31s
CMake do not install test (with otlp-exporter)	14m 26s
CMake install test (with abseil)	4m 29s
CMake test (with modern protobuf,grpc and abseil)	18m 12s
CMake msvc (maintainer mode)	7m 24s
CMake test (with opentracing-shim)	4m 26s
CMake test (build shared libraries with otlp-exporter and static gRPC)	13m 29s
CMake test (with otlp-exporter)	13m 53s
CMake C++14 test(GCC)	4m 4s
CMake C++17 test(GCC)	4m 41s
CMake C++20 test(GCC)	8m 13s
CMake C++20 test(Clang with libc++)	9m 19s
CMake test (without otlp-exporter and with async export)	5m 1s
Plugin -> CMake	1m 9s
Bazel asan config	12m 56s
Bazel noexcept	12m 15s
Bazel nortti	13m 29s
Bazel on MacOS	16m 16s
Bazel tsan config	13m 1s
Bazel valgrind	15m 21s
Bazel with external abseil	12m 31s
Benchmark	8m 13s
Copyright	7s
Format	13s
CMake -> exporter proto	12m 36s
CMake -> exporter proto (Build as DLL)	12m 31s
Code coverage	10m 45s
DocFX check	1m 3s
markdown-lint	6s
misspell	7s
Bazel Windows	19m 46s
Plugin -> CMake Windows	6m 59s
CMake (With async export) -> exporter proto	12m 14s
	6h 21m 25s

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