feat (Guides): Added new qBittorrent Tips page for known working themes (#1587)

Co-authored-by: TRaSH <trash-pm@protonmail.ch>

docs/Downloaders/qBittorrent/Tips/Themes.md

@@ -0,0 +1,10 @@
+# Themes
+
+A list of known working qBittorrent themes.
+
+| Theme                                                                                                                          | Style | Compatibility  |
+| ------------------------------------------------------------------------------------------------------------------------------ | ----- | -------------- |
+| [Nightwalker Theme (CallMeBruce fork)](https://github.com/CallMeBruce/nightwalker){:target="_blank" rel="noopener noreferrer"} | Dark  | v4.5           |
+| [World of Quinoa](https://github.com/gl0ryus/woq){:target="_blank" rel="noopener noreferrer"}                                  | Dark  | v4.3.9, v4.4.5 |
+
+--8<-- "includes/support.md"