Configure Copilot instructions for repository

[Copilot]

Adds .github/copilot-instructions.md to provide AI coding assistants with repository context per GitHub best practices.

Contents

• Project context: XrmToolBox plugin for generating Excel/Word documentation from Dynamics CRM/Dataverse metadata
• Stack: .NET Framework 4.8, EPPlus, DocumentFormat.OpenXml, XrmToolBox SDK
• Build: MSBuild with ILMerge post-build step for dependency merging in Release
• Architecture: Plugin pattern with IDocument interface for multiple output formats (Excel, Word variants)
• Conventions: XrmToolBox plugin requirements ([Export] attributes, Base64 images), ListView Tag usage for SchemaName storage
• Dependencies: EPPlus 5.x licensing notes (Polyform Noncommercial)

Structure

MsCrmTools.MetadataDocumentGenerator/
├── Generation/          # IDocument implementations
├── Helper/              # Extension methods, metadata utilities
├── Forms/               # Publisher/Solution selection dialogs
└── Plugin.cs            # XrmToolBox entry point

Enables better code suggestions by documenting patterns like rollup column detection and entity metadata handling that aren't obvious from limited code context.

Original prompt

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This section details on the original issue you should resolve

<issue_title>✨ Set up Copilot instructions</issue_title>
<issue_description>Configure instructions for this repository as documented in Best practices for Copilot coding agent in your repository.

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes ✨ Set up Copilot instructions #38

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.