[WIP] Add repository health files: Code of Conduct, Contributing, License, Security, Issue & PR templates

[Copilot]

Adding standard community and repository health files to the UIgenie repository.

Plan:

• Create .github/ISSUE_TEMPLATE directory structure
• Add CODE_OF_CONDUCT.md (Contributor Covenant v2.1)
• Add CONTRIBUTING.md (Contributing guidelines)
• Add LICENSE file (MIT License)
• Add SECURITY.md (Vulnerability reporting instructions)
• Add .github/ISSUE_TEMPLATE/bug_report.md (Bug report template)
• Add .github/ISSUE_TEMPLATE/feature_request.md (Feature request template)
• Add .github/PULL_REQUEST_TEMPLATE.md (PR template with checklist)

All files will use standard, widely accepted templates for open source projects.

This pull request was created as a result of the following prompt from Copilot chat.

Add standard community and repository health files to the repository. The following files should be added with typical open-source templates:

1. CODE_OF_CONDUCT.md: Contributor Covenant v2.1 code of conduct.
2. CONTRIBUTING.md: Contributing guidelines including how to fork, branch, test, submit PRs, and report issues.
3. LICENSE: MIT License.
4. SECURITY.md: Instructions for reporting vulnerabilities and disclosure policy.
5. .github/ISSUE_TEMPLATE/bug_report.md: Bug report issue template.
6. .github/ISSUE_TEMPLATE/feature_request.md: Feature request issue template.
7. .github/PULL_REQUEST_TEMPLATE.md: Pull request template with checklist and description.

Each file should use standard, widely accepted templates for open source projects. Place issue and PR templates in the .github directory.

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[aryan6673]

@copilot retry

[aryan6673]

you did no changes