Implements GLTF Draco extension support #5106

Job	Run time
external-build	1m 25s
android (armeabi-v7a)	1m 43s
Update LFS data cache	34s
android (arm64-v8a)	1m 50s
webassembly	1m 30s
android (x86)	1m 33s
android (x86_64)	1m 34s
macos (commit, no-bundle)	15m 38s
coverage	4m 41s
macos (v9.3.0, no-bundle)	10m 15s
macos_arm (commit, no-bundle)	3m 44s
linux (commit, standard)	4m 56s
macos_arm (v9.3.0, no-bundle)	3m 42s
macos (v9.2.6, no-bundle)	9m 16s
linux (v9.3.0, standard)	4m 54s
macos_arm (v9.2.6, no-bundle)	3m 11s
macos (commit, bundle)	19m 29s
python-packaging (ubuntu)	3m 11s
linux (v9.2.6, standard)	4m 35s
macos_arm (commit, bundle)	4m 4s
python-packaging (windows)	4m 49s
linux (v9.1.0, standard)	4m 11s
python-packaging (macos)	3m 51s
linux (v9.0.0, standard)	3m 4s
sanitizer (address)	6m 29s
linux (headless, commit, raytracing, optional-deps, no-exclude-deprecated, egl)	4m 44s
static-analysis	3m 20s
sanitizer (thread)	10m 26s
windows (commit)	6m 21s
sanitizer (undefined)	4m 40s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, no-egl)	4m 58s
windows (v9.3.0)	7m 22s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, no-egl)	3m 10s
windows (v9.2.6)	6m 50s
	2h 56m 0s

Provide feedback