* add asset manifest bin loading and asset manifest api
* use new api for image resolution
* remove upfront smc data casting
* fix typecasting issue
* remove unused import
* fix tests
* lints
* lints
* fix import
* revert image resolution changes
* Update image_resolution_test.dart
* Update decode_and_parse_asset_manifest.dart
* make targetDevicePixelRatio optional
* Update packages/flutter/lib/src/services/asset_manifest.dart
Co-authored-by: Jonah Williams <jonahwilliams@google.com>
* Update packages/flutter/lib/src/services/asset_manifest.dart
Co-authored-by: Jonah Williams <jonahwilliams@google.com>
* fix immutable not being imported
* return List in AssetManifest methods, fix annotation import
* simplify onError callback
* make AssetManifest methods abstract instead of throwing UnimplementedError
* simplify AssetVariant.key docstring
* tweak _AssetManifestBin docstring
* make AssetManifest and AssetVariant doc strings more specific
* use List.of instead of List.from for type-safety
* adjust import
* change _AssetManifestBin comment from doc comment to normal comment
* revert to callback function for onError in loadStructuredBinaryData
* add more to the docstring of AssetManifest.listAssets and AssetVariant.key
* add tests for CachingAssetBundle caching behavior
* add simple test to ensure loadStructuredBinaryData correctly calls load
* Update asset_manifest.dart
* update docstring for AssetManifest.getAssetVariants
* rename getAssetVariants, have it include main asset
* rename isMainAsset field of AssetMetadata to main
* (slightly) shorten name of describeAssetAndVariants
* rename describeAssetVariants back to getAssetVariants
* add tests for TestAssetBundle
* nits
* fix typo in docstring
* remove no longer necessary non-null asserts
* update gallery and google_fonts versions
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Co-authored-by: Jonah Williams <jonahwilliams@google.com>
