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Adds createImageFromTextureSource for flutter web, exposed in dart:web_ui.
```dart
final ui.Image uiImage = renderer.createImageFromTextureSource(bitmap,
width: 150, height: 150, transferOwnership: false);
```
In canvaskit renderer, this will use MakeLazyImageFromTextureSource. In SkWasmRenderer, it will call imageCreateFromTextureSource, which was already implemented in SkWasm for createImageFromImageBitmap to use, but was not exposed in a way that it could be taken advantage of.
By default, createImageFromTextureSource will create a copy of the object it is passed, but transferOwnership: true may be specified to allow transferable objects to be transferred to the renderer, avoiding the copy.
Fixes: https://github.com/flutter/flutter/issues/150479
Fixes: https://github.com/flutter/flutter/issues/144815
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