Refactor icons jammy (#108)

* chore: add icons and installation

* refactor: use the new battery icons

* refactor: use audio applet icons

* chore dependency cleanup

* chore: remove icons included in cosmic-icons package

* refactor: use icons for signal strength and fix handling of new connections

* fix: improve some logic for the networking applet

* chore: add cosmic-icons to Depends

* feat: use notifications icons

* chore: set bluetooth icon depending on state

* fix: set default font and text size

* feat (network): add airplane-mode message

* feat (battery): add display icons to the battery applet

* fix (battery): logic for selecting the battery icon & use new battery icons

cosmic-applet-notifications/data/icons/scalable/status/cosmic-applet-notification-symbolic.svg

@@ -0,0 +1,14 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g id="Status Icons/notification-symbolic" clip-path="url(#clip0_4612_124293)">
+<g id="Group">
+<path id="Vector" d="M0 0L16 0V16H0L0 0Z" fill="#808080" fill-opacity="0.01"/>
+<path id="Vector_2" d="M13 3H3C1.89543 3 1 3.89543 1 5V10C1 11.1046 1.89543 12 3 12H13C14.1046 12 15 11.1046 15 10V5C15 3.89543 14.1046 3 13 3Z" fill="#232323"/>
+<path id="Vector_3" d="M12 12L10 15L8 12H12Z" fill="#232323"/>
+</g>
+</g>
+<defs>
+<clipPath id="clip0_4612_124293">
+<rect width="16" height="16" fill="white"/>
+</clipPath>
+</defs>
+</svg>