refactor: update project branding and structure for gregFramework

- Changed project title and tagline in docusaurus.config.js to reflect the new branding.
- Updated package.json and package-lock.json to rename the project to gregwiki-docs-site.
- Adjusted sidebar and documentation files to align with the new project structure and naming conventions.
- Enhanced documentation content for clarity and consistency across various sections.
- Added Prettier as a development dependency for code formatting.

This commit aligns the project with the new branding and improves overall documentation quality.

docs/guides/players/newbies.md

@@ -0,0 +1,29 @@
+---
+id: newbies
+title: Newbies
+slug: /audiences/newbies
+---
+
+## Goal
+
+Get FrikaMF running safely and understand the minimum concepts.
+
+## Start here
+
+1. Install MelonLoader and run the game once.
+2. Copy `FrikaModdingFramework.dll` into `Data Center/Mods`.
+3. Add the mod that depends on FrikaMF.
+4. Check `MelonLoader/Latest.log`.
+
+## Read next
+
+- `.wiki/End-User-Release.md`
+- `.wiki/End-User-Release-en.md`
+- `.wiki/Known-Incompatibilities-en.md`
+- `.wiki/Bekannte-Inkompatibilitaeten.md`
+
+## Common mistakes
+
+- Wrong folder (`Mods` vs `RustMods`)
+- Missing first game start after MelonLoader install
+- Mixing incompatible game/framework versions