refactor: Rename package from wikijs-python-sdk to py-wikijs and migrate to GitHub

Complete package renaming and platform migration:

Package Name Changes:
- Rename package from 'wikijs-python-sdk' to 'py-wikijs'
- Update setup.py package name
- Update pyproject.toml package name
- Users can now install with: pip install py-wikijs

URL Migration (Gitea → GitHub):
- Replace all Gitea URLs with GitHub URLs
- Update repository: github.com/l3ocho/py-wikijs
- Update issue tracker: github.com/l3ocho/py-wikijs/issues
- Update documentation links
- Fix URL path format (/src/branch/main/ → /blob/main/)

Documentation Updates:
- Update README.md badges (PyPI, GitHub)
- Update installation instructions (pip install py-wikijs)
- Update all doc references to new package name
- Update all examples with GitHub URLs
- Update DEPLOYMENT_READY.md with new package name
- Update deployment.md with new package name

Testing:
- Successfully built py_wikijs-0.1.0.tar.gz (138 KB)
- Successfully built py_wikijs-0.1.0-py3-none-any.whl (66 KB)
- Package installs correctly: pip install py-wikijs
- Imports work: from wikijs import WikiJSClient
- Package metadata correct (Home-page: github.com/l3ocho/py-wikijs)

Breaking Changes:
- Package name changed from wikijs-python-sdk to py-wikijs
- Repository migrated from Gitea to GitHub
- All URLs updated to GitHub

Users should now:
pip install py-wikijs  # Instead of wikijs-python-sdk

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

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

docs/wikijs_sdk_release_plan.md

@@ -1,7 +1,7 @@
 # Wiki.js Python SDK - Release Plan
 
-**Project Name:** `wikijs-python-sdk`  
-**Repository:** `https://gitea.hotserv.cloud/lmiranda/py-wikijs`  
+**Project Name:** `py-wikijs`  
+**Repository:** `https://github.com/l3ocho/py-wikijs`  
 **License:** MIT  
 **Target Audience:** Python developers, DevOps engineers, Data scientists  
 
@@ -66,7 +66,7 @@ gantt
 - **Documentation**: API documentation and usage examples
 
 ### Success Criteria
-- [ ] Package installable via `pip install git+https://gitea.hotserv.cloud/lmiranda/py-wikijs.git`
+- [ ] Package installable via `pip install git+https://github.com/l3ocho/py-wikijs.git`
 - [ ] Basic page operations work with real Wiki.js instance
 - [ ] >85% test coverage with passing CI/CD
 - [ ] Complete API documentation