[DOC] Add document and example for sharing gRPC Client (#3260) #11074

Job	Run time
Bazel asan config	21m 17s
Bazel without bzlmod	16m 32s
Bazel noexcept	17m 34s
Bazel nortti	18m 14s
Bazel on MacOS	13m 14s
Bazel	17m 53s
Bazel with async export	17m 44s
Bazel tsan config	18m 51s
Bazel valgrind	22m 46s
Benchmark	14m 53s
CMake test (with abseil)	5m 13s
CMake clang 18 (maintainer mode, abiv2)	18m 26s
CMake clang 18 (maintainer mode, async)	18m 21s
CMake clang 18 (maintainer mode, sync)	18m 30s
CMake do not install test (with otlp-exporter)	15m 17s
CMake gcc 14 (maintainer mode, async)	16m 56s
CMake gcc 14 (maintainer mode, sync)	16m 3s
CMake install test (with abseil)	5m 14s
CMake test (with modern protobuf,grpc and abseil)	17m 42s
CMake msvc (maintainer mode)	9m 3s
CMake msvc (maintainer mode) with C++20	9m 29s
CMake test (with opentracing-shim)	4m 57s
CMake test (build shared libraries with otlp-exporter and static gRPC)	15m 24s
CMake test (with otlp-exporter)	16m 11s
CMake test (without otlp-exporter)	6m 11s
CMake C++14 test(GCC)	4m 40s
CMake C++17 test(GCC)	5m 17s
CMake C++20 test(Clang with libc++)	9m 48s
CMake C++20 test(GCC)	10m 1s
CMake C++23 test(Clang with libc++)	9m 29s
CMake C++23 test(GCC)	10m 14s
CMake test (without otlp-exporter and with async export)	5m 38s
Code coverage	12m 42s
Copyright	12s
DocFX check	37s
Format	2m 56s
markdown-lint	6s
misspell	3s
Plugin -> CMake	1m 8s
shellcheck	3s
W3C Distributed Tracing Validation V1	4m 33s
CMake -> exporter proto	13m 42s
Bazel Windows	38m 59s
Plugin -> CMake Windows	8m 9s
CMake (With async export) -> exporter proto	13m 5s
CMake -> exporter proto (Build as DLL)	26m 15s
	9h 9m 32s

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