[READY] Add support for didChangeWorkspaceFolders #641

Job	Run time
C++ Lint	6m 8s
ubuntu-20.04 - C++ Benchmark	2m 22s
Windows MSVC 17 x64 - C++ Benchmark	4m 45s
ubuntu-20.04 - test run	20m 3s
macos-12 - C++ Benchmark	3m 33s
Windows MSVC 17 x64 - test run	22m 42s
macos-12 - test run	22m 49s
Windows MSVC 17 x86 - test run	22m 38s
ubuntu-20.04 - with Clang compiler - test run	20m 59s
Windows MSVC 16 x64 - test run	22m 40s
ubuntu-20.04 - without libclang completer - test run	19m 2s
	2h 47m 41s

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