feat(genai): add live samples (1)

[jdomingr]

Description

Update SDK version and add multimodal live samples:

• Generate content with a text input.
• Generate content with Code Execution tool.
• Generate content with Google Search tool.
• Transcribe Audio

Checklist

• I have followed Sample Format Guide
• Tests pass: mvn clean verify required
• Lint passes: mvn -P lint checkstyle:check required
• Static Analysis: mvn -P lint clean compile pmd:cpd-check spotbugs:check advisory only
• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

You are about to add 4 region tags.

• genai/snippets/src/main/java/genai/live/LiveCodeExecWithTxt.java:19, tag googlegenaisdk_live_code_exec_with_txt
• genai/snippets/src/main/java/genai/live/LiveGroundGoogSearchWithTxt.java:19, tag googlegenaisdk_live_ground_googsearch_with_txt
• genai/snippets/src/main/java/genai/live/LiveTranscribeWithAudio.java:19, tag googlegenaisdk_live_transcribe_with_audio
• genai/snippets/src/main/java/genai/live/LiveWithTxt.java:19, tag googlegenaisdk_live_with_txt

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[gemini-code-assist]

Summary of Changes

Hello @jdomingr, 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 significantly enhances the GenAI snippets by updating the core SDK to its latest version and introducing a suite of new 'live' samples. These samples provide practical, real-world examples of how to leverage multimodal generation, including text-based interactions, tool usage with code execution and Google Search, and audio transcription, thereby expanding the utility and demonstration of the GenAI SDK's capabilities.

Highlights

• SDK Version Update: The Google GenAI SDK dependency has been updated from version 1.23.0 to 1.25.0 in the pom.xml.
• New Live Samples: Four new live samples have been added to demonstrate various multimodal generation capabilities of the GenAI SDK.
• Code Execution Sample: A new sample (LiveCodeExecWithTxt.java) illustrates how to generate content using the Code Execution tool with a text input.
• Google Search Sample: A new sample (LiveGroundGoogSearchWithTxt.java) demonstrates generating content with the Google Search tool and a text input.
• Audio Transcription Sample: A new sample (LiveTranscribeWithAudio.java) showcases how to transcribe audio using the GenAI SDK.
• Basic Text Generation Sample: A new sample (LiveWithTxt.java) provides a basic example of sending a text prompt and receiving messages from the live server.
• Integration Tests: Corresponding integration tests (LiveIT.java) have been added to verify the functionality of all new live samples.

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[gemini-code-assist]

Code Review

This pull request updates the SDK version and adds four new live samples demonstrating various features of the GenAI SDK. The new samples are for code execution, Google Search, audio transcription, and basic text generation. The changes are well-implemented and the accompanying integration tests are a great addition. I've made a few suggestions across the new sample files to refactor the server message handling logic for improved readability and efficiency by leveraging Java's Optional features more idiomatically.