Add a meta importer #6516

Job	Run time
Update LFS data cache	13s
android (armeabi-v7a)	1m 46s
android (arm64-v8a)	1m 33s
external-build	1m 25s
android (x86)	1m 34s
android (x86_64)	1m 45s
macos (commit)	3m 11s
macos_arm (commit, no-bundle, no-static)	1m 45s
macos (v9.3.1)	4m 19s
macos_arm (v9.3.1, no-bundle, no-static)	1m 39s
macos (v9.2.6)	3m 23s
linux (commit, standard)	2m 30s
macos_arm (v9.2.6, no-bundle, no-static)	1m 39s
linux (v9.3.1, standard)	2m 25s
macos_arm (commit, bundle, no-static)	1m 41s
linux (v9.2.6, standard)	2m 30s
coverage	7m 10s
macos_arm (commit, no-bundle, static)	1m 50s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl, no-static)	2m 45s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl, no-static)	3m 13s
python-packaging (ubuntu-latest)	2m 28s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl, ...	5m 8s
sanitizer (address)	9m 9s
python-packaging (windows-latest)	3m 24s
linux (static_libs, commit, no-raytracing, optional-deps, no-exclude-deprecated, no-egl, static)	2m 26s
python-packaging (macos-13)	3m 20s
sanitizer (thread)	13m 59s
sanitizer (undefined)	7m 44s
static-analysis	4m 31s
windows (commit, no-static)	3m 30s
windows (v9.3.1, no-static)	3m 40s
windows (v9.2.6, no-static)	3m 35s
windows (commit, static)	4m 4s
	1h 55m 14s

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