Use libxml2 for configuration parsing #1122

Job	Run time
Build on Fedora 38	2m 0s
Build on macOS for osx	6m 34s
Build on Fedora 39	2m 21s
Build on macOS for ios	2m 22s
Run Coverity tests	0s
Build on macOS for iossimulator	3m 14s
Run CodeQL tests	1m 36s
Build on macOS for androidarm	2m 37s
Deploy pages	0s
Build on macOS for androidarm64	3m 20s
Build on Ubuntu 20.04	1m 36s
Build on macOS for androidx86_64	2m 42s
Build on Windows (143, x86)	5m 59s
Build on Ubuntu 22.04	1m 29s
Build on Windows (143, x64)	6m 1s
Build on Ubuntu 23.10	1m 39s
Build on Windows (142, x86)	6m 2s
Build on Windows (142, x64)	5m 57s
	55m 29s

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