Add individual README.md to each sample

[lethargicpanda]

Add individual README.md to each sample

[gemini-code-assist]

Summary of Changes

Hello @lethargicpanda, 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 dedicated README.md files for all existing AI samples within the repository. The primary goal is to enhance the clarity and accessibility of each sample's documentation, providing users with a quick and thorough understanding of its purpose, how it functions, and relevant implementation details, thereby streamlining the onboarding process for new users and contributors.

Highlights

• New READMEs for AI Samples: Each sample now includes a dedicated README.md file, providing a comprehensive overview, description, "how it works" section with code snippets, and relevant documentation links.
• Enhanced Sample Documentation: The newly added READMEs significantly improve the documentation for each AI sample, making it easier for users to understand their purpose, functionality, and implementation details.
• Visual Aids and Code Snippets: Every README includes an image demonstrating the sample in action and key code snippets to highlight the core logic and interaction with AI models like Gemini and Imagen.

Ignored Files

• Ignored by pattern: .gemini/** (1)
  • .gemini/styleguide.md

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[gemini-code-assist]

Code Review

This pull request adds individual README.md files to each sample application, which is a great addition for improving the usability and understanding of each sample. The new documentation is clear and provides helpful code snippets. My review focuses on improving the maintainability of the documentation by suggesting the use of relative links, and I've also provided feedback on the code snippets to align them with Android architecture best practices and improve code robustness. Several suggestions address potential null pointer exceptions, race conditions, and violations of architectural principles.

[lethargicpanda]

cc @JolandaVerhoef @calren @ksemenova