add README

README.md

+# Ximper Unified Theme Switcher
+
+**Version:** 0.1.0
+
+
+**Authors:** Ximper, Fiersik  
+
+## Description
+**Ximper Unified Theme Switcher**
+Designed to switch themes (Kvantum and GTK3) to suitable ones, simultaneously with changing the style of your system.
+
+## Issues and Suggestions
+If you have any questions or suggestions, please create them in the [Issues section](https://gitlab.eterfund.ru/ximperlinux/ximper-unified-theme-switcher/issues).
+
+## License
+**Copyright © 2024 Etersoft**
+
+---
+# TODO
+
+## GUI
+- [ ] Notification that the service is off and a suggestion to turn it on.
+- [x] Make the interface more user-friendly:
+  - [ ] Add theme presets for all toolkits?
+  - [ ] Rename Kvantum (to QT) and GTK3 (to GTK) headers?
+
+## Service
+- [ ] Switch themes for GTK4? (often break with libadwaita updates, difficult to implement).
+- [ ] Support other environments (e.g., Hyprland, Cinnamon):
+  - [x] Create a mode where the service monitors changes in the config file instead of the org.gnome.desktop.interface schema (possibly unnecessary).