feat: add complete GitHub repository pages and MIT License for open source

Add professional open source repository setup with all essential GitHub
community health files, templates, and legal documentation.

Core Files Added (5):

1. **LICENSE**
   - Official MIT License
   - Copyright 2025 Alireza Rezvani
   - GitHub will automatically recognize and display
   - Enables commercial use, modification, distribution

2. **CONTRIBUTING.md**
   - Complete contribution guidelines
   - Skill creation standards following Anthropic spec
   - Python script quality requirements
   - Development workflow and PR process
   - Style guide (Python PEP 8, Markdown, commits)
   - Domain-specific guidelines
   - Quality checklist for contributors

3. **CODE_OF_CONDUCT.md**
   - Contributor Covenant 2.0 standard
   - Community standards and expectations
   - Enforcement guidelines
   - Incident reporting process

4. **SECURITY.md**
   - Vulnerability reporting process
   - Supported versions table
   - Response timelines by severity
   - Security best practices for users
   - Secure coding guidelines for contributors
   - Responsible disclosure policy

5. **CHANGELOG.md**
   - Keep a Changelog format
   - Complete version history from v1.0.0
   - Documents all 42 skills in initial release
   - Tracks Anthropic refactoring progress (v1.1.0)
   - GitHub pages addition (v1.0.2)
   - Semantic versioning with comparison links

GitHub Templates Added (5):

6. **.github/ISSUE_TEMPLATE/bug_report.md**
   - Standardized bug reporting
   - Environment details checklist
   - Reproduction steps required
   - Skill-specific context

7. **.github/ISSUE_TEMPLATE/feature_request.md**
   - New skill proposal template
   - Problem statement and use cases
   - ROI and value quantification
   - Python tools and references specification

8. **.github/ISSUE_TEMPLATE/skill_improvement.md**
   - Enhancement suggestions for existing skills
   - Specific change proposals
   - Value proposition requirement
   - Implementation willingness indicator

9. **.github/ISSUE_TEMPLATE/documentation.md**
   - Documentation issue reporting
   - Clear before/after examples
   - Affected audience specification
   - Link validation focus

10. **.github/pull_request_template.md**
    - Comprehensive PR checklist
    - Quality standards enforcement
    - Testing requirements
    - Documentation update verification
    - ROI value estimation

Benefits:

**For Repository:**
- ✅ Professional open source appearance
- ✅ GitHub recognizes LICENSE automatically
- ✅ Community health score improves to 100%
- ✅ Legal clarity (MIT License)
- ✅ Security vulnerability process established

**For Contributors:**
- ✅ Clear contribution guidelines
- ✅ Standardized issue templates
- ✅ Quality checklists
- ✅ Expected behavior defined

**For Users:**
- ✅ Transparent licensing
- ✅ Security reporting process
- ✅ Version history tracking
- ✅ Professional community standards

Repository Status:
- All GitHub recommended community files present
- Open source best practices followed
- Ready for community contributions
- Professional project presentation

This completes the essential GitHub repository setup for a professional
open source project, making the Claude Skills Library contribution-ready
and community-friendly.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 Alireza Rezvani
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.