Implements GLTF Draco extension support (#1287) #5158

Job	Run time
Update LFS data cache	23s
android (armeabi-v7a)	30m 28s
external-build	43m 32s
android (arm64-v8a)	30m 45s
webassembly	39m 9s
android (x86)	30m 28s
android (x86_64)	30m 55s
coverage	47m 40s
macos (commit, no-bundle)	57m 0s
macos_arm (commit, no-bundle)	3m 35s
linux (commit, standard)	47m 45s
macos (v9.3.0, no-bundle)	10m 38s
macos_arm (v9.3.0, no-bundle)	3m 38s
python-packaging (ubuntu)	45m 41s
macos (v9.2.6, no-bundle)	9m 24s
linux (v9.3.0, standard)	5m 29s
macos_arm (v9.2.6, no-bundle)	4m 3s
python-packaging (windows)	1h 9m 55s
macos (commit, bundle)	1h 12m 20s
linux (v9.2.6, standard)	4m 36s
macos_arm (commit, bundle)	27m 32s
python-packaging (macos)	59m 48s
linux (v9.1.0, standard)	4m 17s
linux (v9.0.0, standard)	3m 12s
sanitizer (address)	49m 47s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl)	49m 11s
static-analysis	45m 39s
sanitizer (thread)	51m 28s
windows (commit)	1h 14m 13s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl)	47m 36s
sanitizer (undefined)	46m 24s
windows (v9.3.0)	7m 42s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl)	46m 26s
windows (v9.2.6)	7m 31s
	18h 28m 10s

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