Add initial documentation and structure for DorkNet project

- Create README.md for project overview and setup instructions
- Add admin-ui/README.md for admin UI details and development setup
- Introduce client-mod/README.md explaining the MelonLoader mod functionality
- Establish docker/README.md for Docker setup and configuration
- Create docs/README.md to index project documentation
- Implement advanced-setup.md for Docker stack configuration
- Document architecture in architecture.md
- Provide easy-setup.md for hosting instructions
- Add FAQ.md for common questions and legal considerations
- Create joining-a-server.md for player connection instructions
- Establish troubleshooting.md for common issues and resolutions
- Introduce easy-app/README.md for the unified desktop application
- Add server/README.md for ASP.NET Core backend details
- Document tools/README.md for CLI helper scripts

docs/README.md

@@ -0,0 +1,10 @@
+# DorkNet docs
+
+| Doc                                    | For who                                              |
+| -------------------------------------- | ---------------------------------------------------- |
+| [easy-setup.md](easy-setup.md)         | Hosts who want the desktop-app one-click experience  |
+| [advanced-setup.md](advanced-setup.md) | Hosts running a community server on a VPS            |
+| [joining-a-server.md](joining-a-server.md) | Players whose friend gave them a join code       |
+| [architecture.md](architecture.md)     | Anyone hacking on the code                           |
+| [faq.md](faq.md)                       | Common questions before you ask in issues            |
+| [troubleshooting.md](troubleshooting.md) | Known failure modes + fixes                        |