Adding permissions guide to troubleshooting.md #1786

Job	Run time
build-macos-brew (clang-9)	4m 4s
build-linux (gcc-9)	5m 30s
build-linux-Qt6 (gcc-9)	7m 13s
build-macos-brew-Qt6 (clang-9)	4m 19s
build-macos-no-brew (clang-9)	5m 10s
build-macos-no-brew-Qt6 (clang-9)	8m 22s
build-windows-mingw (5.15.*)	15m 32s
build-windows-mingw-Qt6 (6.5.*, qtmultimedia qt5compat)	18m 42s
build-windows-vs (5.15.*)	12m 9s
build-windows-vs-Qt6 (6.3.*, qtmultimedia qt5compat)	19m 22s
	1h 40m 23s

Provide feedback