feat: Add Project Documenter Plugin with agents and skills (#1436)

* feat: Add Project Documenter Plugin with agents and skills

- Auto-discovers technology stack and project structure
- Generates architecture diagrams with draw.io
- Creates professional Word (.docx) output with embedded PNG images
- Includes agents for orchestration and skills for functionality

* chore: moved agents, skills and scripts to respective folders

* chore: ran npm run build for readme updates

* Update plugins/project-documenter/.github/plugin/plugin.json

Co-authored-by: Aaron Powell <me@aaron-powell.com>

* fix: readme.agent.md file

* fix: added the missing agent file and updated readme for the same

---------

Co-authored-by: Aaron Powell <me@aaron-powell.com>

skills/md-to-docx/scripts/package.json

@@ -0,0 +1,9 @@
+{
+  "private": true,
+  "type": "module",
+  "description": "Dependencies for the Markdown to Word converter skill",
+  "dependencies": {
+    "docx": "^9.6.1",
+    "marked": "^17.0.4"
+  }
+}