Bazel changes

• Make ThreadPoolExecutorOptions callable from Java/Kotlin
• Add contract validator for API3
• API3 Extract reusable part of API2 graph builder.
• Adding license headers.
• Post release version bump
• API3 calculators should default to timestamp offset 0 (the same default as in API2) for consistency and it should be possible to unset the default.
• API3 graph, stream & side_packet
• Add SRQ config option into TransformerParams proto.
• Graph API2 API3 interop.
• Adding basic vision+text testing capabilities to web LLM Inference API

MediaPipe Tasks update

This section should highlight the changes that are done specifically for any platform and don't propagate to other platforms.

• Drops duplicated Android manifest file.
• Makes LlmTaskRunner internal.

Javascript

• Web LLM: Minor refactoring to allow more usage of newer LLM code paths