Add logo and banner to README

Embed project logo and banner in the README and add the corresponding image assets. Adds img/logo.png (displayed above the title) and img/banner.png (displayed below the title) to improve repository branding and visual presentation.

README.md

@@ -1,5 +1,9 @@
+![Omnyx Logo](img/logo.png)
+
 # Omnyx - Media Discovery Platform
 
+![Omnyx Banner](img/banner.png)
+
 A modern web application for browsing, managing, and discovering media across multiple categories. Omnyx provides a unified interface for your media library with support for importing from external sources like Playnite, StashAPP, and XBVR.
 
 ## Features