added a brick for vyuh_feature, feature for firebase auth #11

Job	Run time
publish_dart_packages (packages/system/vyuh_extension_content)	1m 31s
publish_dart_packages (packages/system/vyuh_cache)	1m 13s
publish_dart_packages (packages/system/vyuh_core)	1m 25s
publish_dart_packages (packages/system/vyuh_feature_developer)	1m 27s
publish_dart_packages (packages/system/vyuh_feature_system)	1m 33s
publish_dart_packages (packages/system/vyuh_extension_script)	1m 31s
publish_dart_packages (packages/plugin/vyuh_content_provider_sanity)	1m 31s
publish_dart_packages (packages/sanity/flutter_sanity_portable_text)	1m 29s
publish_dart_packages (packages/sanity/sanity_client)	1m 30s
	13m 10s

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