Reorganize: Move all skills to skills/ folder

- Created skills/ directory
- Moved 272 skills to skills/ subfolder
- Kept agents/ at root level
- Kept installation scripts and docs at root level

Repository structure:
- skills/           - All 272 skills from skills.sh
- agents/           - Agent definitions
- *.sh, *.ps1       - Installation scripts
- README.md, etc.   - Documentation

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

skills/plugins/claude-hud/MAINTAINERS.md

@@ -0,0 +1,5 @@
+# Maintainers
+
+- Jarrod Watts (https://github.com/jarrodwatts)
+
+If you are interested in becoming a maintainer, open an issue to start the conversation.