Build

meson: Migrate more submodules to subprojects #2818

Job	Run time
Create source package	1m 24s
Build for Windows (x86_64, Debug) on Ubuntu	9m 40s
Build for Ubuntu (Debug)	3m 34s
Build for Windows (x86_64, Release) on Ubuntu	11m 52s
Build for macOS (x86_64, Debug)	3m 8s
Build for Ubuntu (Release)	4m 15s
Build for Windows (aarch64, Debug) on Ubuntu	2m 37s
Build for macOS (x86_64, Release)	4m 0s
Build for Windows (aarch64, Release) on Ubuntu	3m 58s
Build for macOS (arm64, Debug)	3m 8s
Build for macOS (arm64, Release)	5m 34s
Build macOS Universal Bundle (debug)	14s
Build macOS Universal Bundle (release)	17s
Generate PDB for Windows (x86_64, Debug)	28s
Generate PDB for Windows (x86_64, Release)	23s
Generate PDB for Windows (aarch64, Debug)	27s
Generate PDB for Windows (aarch64, Release)	21s
Push to PPA Snapshot Branch	0s
Release	0s
	55m 20s

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