feat(root): add OSD module and clean up CSS imports

New Features
- Introduced OSD functionality integrated into the application.

Enhancements
- Removed unused stylesheet imports from main.css and corrected the stylesheet path to `styles/main.css`.
- Adjusted the lambda in the network service for consistent method invocation.

Bug Fixes
- Ensured `on_access_point_activated` is properly called when the active access point changes.

main.css

@@ -1,34 +0,0 @@
-@import url("./styles/colors.css");
-@import url("./styles/panel.css");
-@import url("./styles/dock.css");
-@import url("./styles/switcher.css");
-@import url("./styles/launcher.css");
-@import url("./styles/osd.css");
-@import url("./styles/controlcenter.css");
-@import url("./styles/notification.css");
-@import url("./styles/dropdown.css");
-@import url("./styles/about.css");
-@import url("./styles/notification-center.css");
-@import url("./styles/player.css");
-@import url("./styles/widgets.css");
-@import url("./styles/tray.css");
-@import url("./styles/battery-widget.css");
-@import url("./styles/lock.css");
-@import url("./styles/todo.css");
-
-* {
-  all: unset;
-  color: var(--foreground);
-  font-size: unset;
-  font-family: "SF Pro Rounded";
-}
-
-#corner {
-  background-color: var(--shadow);
-  border-radius: 0;
-}
-
-#corner-container {
-  min-width: 20px;
-  min-height: 20px;
-}

main.py

@@ -4,6 +4,7 @@ from fabric.utils import get_relative_path, logger, monitor_file
 from config.data import APP_NAME
 from modules.desktop.widget import Deskwidgets
 from modules.notification.notification import ModusNoti
+from modules.osd import OSD
 from modules.panel.main import Panel
 from utils.functions import set_process_name
 
@@ -28,21 +29,16 @@ if __name__ == "__main__":
     panel = Panel()
     modusnoti = ModusNoti()
     deskwidget = Deskwidgets()
-
+    osd = OSD()
     # Monitor CSS files for changes
     css_file = monitor_file(get_relative_path("styles"))
     _ = css_file.connect("changed", lambda *_: set_css())
 
-    app = Application(
-        f"{APP_NAME}",
-        panel,
-        modusnoti,
-        deskwidget,
-    )
+    app = Application(f"{APP_NAME}", panel, modusnoti, deskwidget, osd)
 
     def set_css():
         app.set_stylesheet_from_file(
-            get_relative_path("main.css"),
+            get_relative_path("styles/main.css"),
         )
 
     app.set_css = set_css

services/network.py

@@ -339,7 +339,9 @@ class Wifi(Service):
         bulk_connect(
             self._device,
             {
-                "notify::active-access-point": lambda *args: self.on_access_point_activated(),
+                "notify::active-access-point": lambda *args: (
+                    self.on_access_point_activated()
+                ),
                 "access-point-added": lambda _, ap: self.on_access_point_added(ap=ap),
                 "access-point-removed": lambda _, ap: self.on_access_point_removed(
                     ap=ap