[Embedder API] Add multi-view present callback

[loic-sharma]

Adds FlutterCompositor.present_view_callback to the embedder API. This new present callback adds a view_id member to allow embedders know which view is being presented.

The embedder API does not allow embedders to create multiple views yet. This will be added in a future pull request.

Design doc: https://flutter.dev/go/multi-view-embedder-apis

Pull request that migrates the Windows embedder to this new embedder API: https://github.com/flutter/engine/pull/51293

Part of https://github.com/flutter/flutter/issues/144806 Part of https://github.com/flutter/flutter/issues/142845

Pre-launch Checklist

• [x] I read the Contributor Guide and followed the process outlined there for submitting PRs.
• [x] I read the Tree Hygiene wiki page, which explains my responsibilities.
• [x] I read and followed the Flutter Style Guide and the C++, Objective-C, Java style guides.
• [x] I listed at least one issue that this PR fixes in the description above.
• [x] I added new tests to check the change I am making or feature I am adding, or the PR is test-exempt. See testing the engine for instructions on writing and running engine tests.
• [x] I updated/added relevant documentation (doc comments with ///).
• [x] I signed the CLA.
• [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel on Discord.

[flutter-dashboard[bot]]

This pull request has been changed to a draft. The currently pending flutter-gold status will not be able to resolve until a new commit is pushed or the change is marked ready for review again.

[loic-sharma]

@cbracken or @chinmaygarde Would you be able to review the changes in embedder.h from an ABI standpoint?

[cbracken]

Taking a look!