Add a meta importer #6454

Job	Run time
Update LFS data cache	53s
android (armeabi-v7a)	1m 42s
android (arm64-v8a)	1m 40s
external-build	1m 35s
android (x86)	1m 40s
android (x86_64)	1m 40s
windows (commit, no-static)	40s
macos_arm (commit, no-bundle, no-static)	46s
windows (v9.3.1, no-static)	41s
macos_arm (v9.3.1, no-bundle, no-static)	1s
coverage	47s
macos (commit)	46s
windows (v9.2.6, no-static)	42s
macos_arm (v9.2.6, no-bundle, no-static)	1s
macos (v9.3.1)	45s
windows (commit, static)	41s
macos_arm (commit, bundle, no-static)	45s
macos (v9.2.6)	49s
python-packaging (ubuntu-latest)	46s
macos_arm (commit, no-bundle, static)	1s
python-packaging (windows-latest)	43s
python-packaging (macos-13)	1s
linux (commit, standard)	1s
linux (v9.3.1, standard)	1s
sanitizer (address)	44s
static-analysis	3s
sanitizer (thread)	45s
linux (v9.2.6, standard)	1s
sanitizer (undefined)	2s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl, no-static)	1s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl, no-static)	1s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl, ...	1s
linux (static_libs, commit, no-raytracing, optional-deps, no-exclude-deprecated, no-egl, static)	1s
	19m 46s

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