Server Prompt Templates

[paulb777]

Adds server template examples for Generate Content and image generation.

[gemini-code-assist]

Summary of Changes

Hello @paulb777, 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 a prototype for server-side prompt templates within the Firebase AI example application. It provides new UI screens and view models for generating content, images, and chat responses using predefined templates. This enhancement aims to demonstrate a more structured and reusable approach to interacting with generative AI models, although the chat template functionality is currently a work in progress.

Highlights

• Server Prompt Templates: Introduced a prototype for server prompt templates to enable dynamic content generation.
• New Examples: Added template examples for Generate Content, Imagen, and Chat functionalities, showcasing template-driven AI interactions.
• Xcode Project Updates: Integrated new template-related Swift files into the Xcode project, updated the bundle identifier, and modified the Swift Package Manager dependency to a specific branch.
• UI Integration: Added new navigation links in the ContentView to provide user interface access to the newly implemented template-based screens.
• Chat Functionality Status: Noted that the 'Chat from Template' feature is currently not yet functional.

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[gemini-code-assist]

Code Review

This pull request adds prototypes for using server prompt templates for content generation, Imagen, and Chat. The changes are well-structured, adding new screens and corresponding view models, and updating the main content view to navigate to them. My feedback focuses on improving code quality by removing commented-out code, avoiding force unwraps, and using constants for hardcoded strings to enhance maintainability.