Rework RPC code and examples #1271

Job	Run time
build-linux (c++11)	2m 19s
build-windows-msvc (c++14, x64)	1m 58s
build-linux (c++14)	1m 53s
clang-format	13s
build-windows-msvc (c++14, x86)	1m 57s
build-macos (c++11)	19s
build-linux (c++17)	1m 59s
build-windows-msvc (c++17, x64)	1m 56s
build-macos (c++14)	32s
build-linux (c++20)	2m 9s
build-windows-msvc (c++17, x86)	1m 56s
doxygen	11s
build-macos (c++17)	33s
build-windows-msvc (c++20, x64)	1m 54s
build-macos (c++20)	21s
build-windows-msvc (c++20, x86)	1m 1s
swig (csharp)	4s
build-cross-windows-on-linux (c++14, ubuntu-20.04)	36s
swig (java)	5s
build-cross-windows-on-linux (c++14, ubuntu-22.04)	41s
swig (python)	5s
build-windows-msys2 (c++14)	2m 36s
build-cross-windows-on-linux (c++17, ubuntu-20.04)	41s
swig (ruby)	4s
build-cross-windows-on-linux (c++17, ubuntu-22.04)	34s
build-cross-windows-on-linux (c++20, ubuntu-22.04)	46s
build-windows-msys2 (c++17)	2m 42s
build-windows-msys2 (c++20)	2m 13s
	32m 18s

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