Merge Docusaurus site: all content under docs/, align with gregFramework split layout

- Move markdown and wiki-import tree into docs/; keep app shell at repo root
- Point docusaurus docs path to docs/; edit links to mleem97/gregWiki
- Sync and i18n scripts use gregWiki root and ../.wiki under gregFramework
- Sidebars: workspace layout from root docs ids; plugins under mods/extensions
- Fix redirects, module catalog URLs, release note paths, and wiki-import category keys
- Update repo inventory for split repos; Dockerfile for single-repo context

Made-with: Cursor

i18n/de/docusaurus-plugin-content-docs/current/wiki-import/EndUser/Troubleshooting/FAQ.md

@@ -0,0 +1,13 @@
+# FAQ EN
+
+## Do I need Rust and C# together?
+
+No. You can choose one language.
+
+## Where is the framework DLL?
+
+`Data Center/Mods/FrikaModdingFramework.dll`
+
+## My mod is not loading
+
+See [Troubleshooting EN](overview).