feat(docs, ui): restructure frontend documentation & introduce Vision directories for modularity

- Moved existing FIGMA-related files into `Vison_01` and `Vision_02` folders to better support versioning and collaboration.
- Added PostCSS configuration for extending plugins in Tailwind CSS.
- Introduced new style guidelines, theme configurations, and modular imports for `Vision_02`.
- Documented detailed ÖTO tournament structures and parameters for CSN/CDN inclusions.
- Enhanced routing and UI files for future scalability, including new `theme.tsx` and `routes.tsx`.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

docs/06_Frontend/FIGMA/Vision_02/ATTRIBUTIONS.md

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+This Figma Make file includes components from [shadcn/ui](https://ui.shadcn.com/) used
+under [MIT license](https://github.com/shadcn-ui/ui/blob/main/LICENSE.md).
+
+This Figma Make file includes photos from [Unsplash](https://unsplash.com) used
+under [license](https://unsplash.com/license).