Add stale issues workflow to manage inactive issues #492

Job	Run time
Build / Create source package	1m 16s
Build / Windows / Build for Windows (x86_64, release)	2m 53s
Build / Linux / Build for Ubuntu (x86_64, debug)	2m 28s
Build / Linux / Build for Ubuntu (aarch64, debug)	3m 31s
Build / Linux / Build for Ubuntu (aarch64, release)	3m 22s
Build / Linux / Build for Ubuntu (x86_64, release)	3m 6s
Build / Windows / Build for Windows (x86_64, debug)	3m 51s
Build / Windows / Build for Windows (arm64, release)	3m 37s
Build / macOS / Build for macOS (x86_64, debug)	2m 30s
Build / macOS / Build for macOS (x86_64, release)	1m 54s
Build / Windows / Build for Windows (arm64, debug)	2m 51s
Build / macOS / Build for macOS (arm64, release)	1m 37s
Build / macOS / Build for macOS (arm64, debug)	1m 56s
Build / macOS / Build macOS Universal bundle (release)	13s
Build / macOS / Build macOS Universal bundle (debug)	13s
Build / Windows / Generate PDB for Windows (x86_64, debug)	25s
Build / Windows / Generate PDB for Windows (arm64, debug)	24s
Build / Windows / Generate PDB for Windows (x86_64, release)	17s
Build / Windows / Generate PDB for Windows (arm64, release)	25s
	36m 49s

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