Add support for native xml parsing. #11940

Job	Run time
build_details	9s
build_js	1m 45s
build_opam (4.14.x)	8m 50s
build_opam (5.2.x)	5m 28s
lezer_parse	47s
build_no_depopts	6m 23s
build_win32 (x64)	4m 1s
build_posix (debian_trixie, amd64)	9m 51s
build_posix (debian_trixie, arm64)	9m 21s
run_tests (@citest)	9m 50s
run_tests (@doctest)	7m 40s
build_posix (debian_bookworm, amd64)	9m 49s
tree_sitter_parse	47s
build_posix (debian_bookworm, arm64)	9m 26s
run_tests (@mediatest)	9m 50s
build_posix (ubuntu_oracular, amd64)	9m 48s
update_doc	0s
build_posix (ubuntu_oracular, arm64)	9m 19s
build_posix (ubuntu_noble, amd64)	9m 50s
build_posix (ubuntu_noble, arm64)	9m 27s
build_posix (alpine, amd64)	9m 50s
build_posix (alpine, arm64)	8m 27s
fetch_s3_artifacts	1s
build_docker	1s
build_docker_minimal	1s
build_docker_alpine	1s
update_release	1s
build_docker_alpine_minimal	1s
build_docker_release	1s
build_docker_release-minimal	1s
	2h 30m 46s

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