Initial implementation of Gitea Wrapped TUI

- Gitea API client with repository and commit fetching
- Interactive credential input screen with masked token input
- Statistics analyzer for commits, languages, and activity patterns
- Multi-page report screen with ASCII charts and visualizations
- Integration of all components in main app coordinator
- Comprehensive README with usage instructions

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.gitignore

@@ -0,0 +1,17 @@
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Go
+vendor/
+*.test
+*.out
+
+wrapped