move add_display::View -> add_window::View & display_options::View -> window_options::VIew, remove displays logic and replace it with window ones

[skip ci]

dash-frontend/src/views/mod.rs

@@ -1,6 +1,5 @@
-pub mod add_display;
 pub mod app_launcher;
 pub mod audio_settings;
-pub mod display_list;
-pub mod display_options;
 pub mod process_list;
+pub mod window_list;
+pub mod window_options;