Updates build files for Wear OS

[garanj]

First draft at trying to get the build scripts to handle Wear OS

Should produce Wear OS AABs as well as the existing Android AABs. 🤞

[gemini-code-assist]

Summary of Changes

Hello @garanj, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces support for building Wear OS application bundles (AABs) within the existing build system. It extends the current build scripts to generate AABs for Wear OS alongside the standard Android AABs, ensuring both platforms are covered in the release process.

Highlights

• Wear OS Build Integration: The build scripts (build.sh and build_presubmit.sh) have been updated to include commands for building Wear OS production release bundles.
• Wear OS Artifact Collection: Logic has been added to collect and prepare Wear OS AABs and their associated SPDX SBOMs for artifact storage.
• Version Bumps: The application version code and name have been incremented in gradle/libs.versions.toml.

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[gemini-code-assist]

Code Review

This pull request updates the build scripts to add support for building Wear OS AABs alongside the existing Android AABs. The changes correctly add the Gradle tasks for the wear module. However, I've found a critical issue where an undefined variable is used when copying the Wear OS artifact, which will cause the build to fail. Additionally, there is significant code duplication in both build.sh and build_presubmit.sh for artifact collection, which should be refactored to improve maintainability. I've also noted a potentially unintentional removal of a Gradle task exclusion in the presubmit script.