feat: Add Copilot Agent Task and Empty Issue templates

[Copilot]

Adds two new issue templates to streamline contributions and support different workflows as requested in #[issue_number].

🤖 Copilot Agent Task Template

File: .github/ISSUE_TEMPLATE/copilot_agent_task.yml

A comprehensive structured template designed specifically for GitHub Copilot Agent work requests. This template ensures the agent has all necessary context and guidance to complete tasks effectively.

Key Features:

• Task Description (required) - Clear description of what needs to be accomplished
• Expected Outcome (required) - Detailed explanation of what the completed task should achieve
• Relevant Context (optional) - Support for screenshots, file references, and related issues
• Priority/Urgency dropdown with 4 levels (Low, Medium, High, Critical)
• Constraints and Guidelines field for coding standards and specific requirements
• Pre-submission checklist to ensure quality requests
• Uses copilot-agent and needs-triage labels with [Copilot Agent]: title prefix
• Includes helpful guidance and examples throughout

📝 Empty Issue Template

File: .github/ISSUE_TEMPLATE/empty_issue.md

A minimal markdown template for quick or generic issue reporting that provides maximum flexibility.

Key Features:

• Contains only title field and blank description area
• No required sections or mandatory formatting constraints
• No default labels or assignees
• Includes helpful comment directing users to appropriate templates when needed
• Perfect for freeform issue reporting

Benefits

This implementation provides contributors with two distinct options:

1. Structured approach - For detailed, guided AI-powered development requests
2. Minimal approach - For quick, generic issue reporting without constraints

Both templates coexist with the existing bug report and feature request templates, giving users the right level of structure for their specific needs while maintaining the project's established template ecosystem.

The templates follow GitHub's best practices and have been validated for proper YAML/Markdown syntax.

Fixes #6

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[Copilot]

Pull Request Overview

This PR adds two new GitHub issue templates to provide different levels of structure for issue reporting: a comprehensive Copilot Agent Task template for AI-assisted development requests and a minimal Empty Issue template for quick reporting.

• Introduces a structured YAML template for Copilot Agent tasks with required fields and validation
• Adds a minimal markdown template for flexible issue reporting
• Both templates complement existing bug report and feature request templates

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/ISSUE_TEMPLATE/copilot_agent_task.yml	Comprehensive YAML template for Copilot Agent work requests with structured fields and validation
.github/ISSUE_TEMPLATE/empty_issue.md	Minimal markdown template for quick issue reporting with maximum flexibility

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