Simplify issue templates and update GitHub workflow accordingly

[afrinxnahar]

🎯 Problem Statement
Current GitHub issue templates are too overwhelming and discourage contributors from filing actionable issues.

💡 Proposed Solution

• Create simpler templates (Bug Report, Feature Request, Query) with minimal fields: problem, steps, expected vs actual, acceptance criteria.
• Update PR templates to shorter checklist-oriented format.
• Update GitHub workflows to apply labels automatically and trigger CI.
• Provide short guide in CONTRIBUTING.md.

📊 Impact Assessment
User Impact: High (increases contributions and clarity)
Development Effort: Low.
Priority: Medium.

🧪 Acceptance Criteria

• New templates in .github/ISSUE_TEMPLATE/.
• CI/workflows updated to run on PR and labeled issues.
• CONTRIBUTING guide updated.

🔗 Related Features
Contributing, triage workflows, automated labels.

📚 Additional Context
Ensure templates are short and require acceptance criteria.

📋 Checklist

• Create new issue templates
• Update PR template
• Update workflows
• Update CONTRIBUTING.md