set up ai assisted development workflow

[rishichawda]

Description

This PR introduces a detailed copilot-instructions.md file in the .github directory to guide AI-assisted development workflows for this repository.

• Added repository folder structure overview
• Documented Jira integration using MCP server for issue details
• Specified mandatory unit testing and >80% coverage requirements
• Outlined GitHub CLI workflow for branch and PR creation (Jira ID as branch name)
• Defined prompt-based development process with step-by-step guidance
• Included DCO compliance and build system integration
• Listed all repository-specific GitHub labels and PR management instructions
• Provided procedures and best practices

Related Issue

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• I have read the CONTRIBUTING document.
• I have run the pre-merge tests locally and they pass.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• If Gemfile.lock has changed, I have used --conservative to do it and included the full output in the Description above.
• All new and existing tests passed.
• All commits have been signed-off for the Developer Certificate of Origin.