[READY] Add support for didChangeWorkspaceFolders #635

Job	Run time
Windows MSVC 17 x64 - C++ Benchmark	4m 47s
C++ Lint	5m 51s
Windows MSVC 17 x64 - test run	31m 27s
ubuntu-20.04 - C++ Benchmark	2m 3s
Windows MSVC 17 x86 - test run	30m 59s
Windows MSVC 16 x64 - test run	27m 25s
ubuntu-20.04 - test run	20m 39s
macos-12 - C++ Benchmark	2m 9s
macos-12 - test run	31m 25s
ubuntu-20.04 - with Clang compiler - test run	18m 49s
ubuntu-20.04 - without libclang completer - test run	18m 50s
	3h 14m 24s

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