Implements GLTF Draco extension support #5155

Job	Run time
external-build	1m 40s
Update LFS data cache	31s
android (armeabi-v7a)	1m 37s
webassembly	1m 40s
android (arm64-v8a)	1m 47s
android (x86)	1m 43s
android (x86_64)	1m 54s
macos_arm (commit, no-bundle)	3m 34s
macos_arm (v9.3.0, no-bundle)	3m 45s
macos_arm (v9.2.6, no-bundle)	3m 13s
windows (commit)	3m 49s
macos (commit, no-bundle)	8m 5s
macos_arm (commit, bundle)	4m 27s
windows (v9.3.0)	8m 18s
linux (commit, standard)	5m 48s
macos (v9.3.0, no-bundle)	8m 20s
windows (v9.2.6)	7m 58s
linux (v9.3.0, standard)	4m 48s
macos (v9.2.6, no-bundle)	6m 45s
linux (v9.2.6, standard)	4m 32s
macos (commit, bundle)	9m 22s
coverage	4m 55s
linux (v9.1.0, standard)	4m 27s
linux (v9.0.0, standard)	3m 19s
python-packaging (ubuntu)	3m 6s
sanitizer (address)	6m 55s
python-packaging (windows)	7m 21s
sanitizer (thread)	10m 29s
python-packaging (macos)	3m 7s
sanitizer (undefined)	4m 47s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl)	4m 57s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl)	4m 45s
static-analysis	3m 27s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl)	3m 5s
	2h 38m 16s

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