Add AI triage workflow and LLM documentation for automated issue management

[Copilot]

This PR adds automated AI-powered issue triage capabilities to the java-debug repository by incorporating the triage agent workflow and LLM documentation from the vscode-gradle repository.

Changes Made

Added Files

• .github/workflows/triage-agent.yml - GitHub Actions workflow that automatically labels and comments on new issues using AI
• .github/llms.md - Documentation containing guidelines for LLM-based issue labeling and Java extension context

Key Features

• Automatic Issue Triage: The workflow triggers on new issue creation and can also be run manually via workflow dispatch
• AI-Powered Labeling: Uses Azure Function integration to analyze issue content and apply appropriate labels
• Java Extension Context: Includes comprehensive documentation about the Java extension ecosystem to guide proper issue categorization

Configuration Updates

• Updated the repoId from microsoft/vscode-gradle to microsoft/java-debug to ensure the triage agent correctly identifies this repository
• Maintained all existing error handling, timeout management, and HTTP status validation from the original workflow

Dependencies

The workflow requires the following repository secrets to be configured:

• GITHUB_TOKEN - For GitHub API access (automatically provided)
• TRIAGE_FUNCTION_LINK - Azure Function endpoint URL
• Repository variable TRIAGE_AGENT_TIMEOUT - Timeout configuration for the triage agent

This enhancement will help maintainers by automatically categorizing new issues, reducing manual triage effort, and ensuring consistent labeling across the repository.

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[chagong]

You must fetch the files from links: https://github.com/microsoft/vscode-gradle/blob/develop/.github/workflows/triage-agent.yml and https://github.com/microsoft/vscode-gradle/blob/develop/.github/llms.md, then add them into the working branch
@copilot

[Copilot]

You must fetch the files from links: https://github.com/microsoft/vscode-gradle/blob/develop/.github/workflows/triage-agent.yml and https://github.com/microsoft/vscode-gradle/blob/develop/.github/llms...

The files have been successfully fetched from the vscode-gradle repository and added to the working branch in commit 8e7a474. Both files are complete and correctly configured:

• .github/workflows/triage-agent.yml - AI triage workflow with repoId updated to "microsoft/java-debug"
• .github/llms.md - Complete LLM documentation with Java extension context

The workflow is ready to automatically label and comment on new issues.