Add comprehensive README for Eclipse GitHub Copilot Plugin

[Copilot]

Replaced minimal placeholder README with full documentation for an Eclipse IDE plugin that integrates GitHub Copilot functionality.

Sections Added

• Overview & Prerequisites - Eclipse 2021-06+, JDK 11+, active Copilot subscription requirements
• Installation - Three methods: Eclipse Marketplace, Update Site, manual dropins deployment
• Configuration - Authentication flow, preference settings (suggestion delay, auto-trigger, language support)
• Usage - Inline suggestions, code generation from comments, keyboard shortcuts table
• Development Setup - Maven/Tycho build configuration, project structure, test execution
• Contributing - Eclipse coding standards, PR guidelines
• Troubleshooting - Common issues: authentication, missing suggestions, performance tuning

The README follows Eclipse plugin documentation conventions and assumes standard Eclipse RCP development patterns.

Original prompt

Hi

TITLE: Create README for Eclipse GitHub Copilot Plugin Project

USER INTENT: The user wants to create a README file for an Eclipse GitHub Copilot plugin project.

TASK DESCRIPTION:

• Create a comprehensive README file for a new Eclipse GitHub Copilot plugin project
• The README should document the purpose, setup, and usage of an Eclipse plugin that integrates GitHub Copilot functionality

EXISTING:

• The project is identified as an Eclipse GitHub Copilot plugin project
• No existing files or implementation details have been discussed yet

PENDING:

• Create the README.md file with appropriate sections for an Eclipse plugin project
• Include standard sections such as:
  • Project description and purpose
  • Installation instructions
  • Usage guidelines
  • Development setup
  • Contributing guidelines
  • License information
  • Prerequisites and dependencies
  • Configuration steps specific to Eclipse plugin development

CODE STATE:

• No files have been created or modified yet
• README.md needs to be created

RELEVANT CODE/DOCUMENTATION SNIPPETS:

• None provided in the conversation

OTHER NOTES:

• This appears to be the initial stage of project documentation
• The conversation was minimal with only greetings exchanged before the summarization request
• The project context suggests this will be an Eclipse IDE plugin that provides GitHub Copilot integration
• Standard Eclipse plugin documentation practices should be followed

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