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-battery/data/icons/scalable/status/cosmic-applet-battery-level-65-symbolic.svg

@@ -0,0 +1,4 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path opacity="0.35" d="M2 12C1.44772 12 1 11.5523 1 11L1 5C1 4.44772 1.44772 4 2 4H9V12H2Z" fill="#232323"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M0 5C0 3.89543 0.895431 3 2 3H12C13.1046 3 14 3.89543 14 5V6L14.0018 6C15.1054 6 16 6.89543 16 8C16 9.10457 15.1054 10 14.0018 10L14 10V11C14 12.1046 13.1046 13 12 13H2C0.89543 13 0 12.1046 0 11V5ZM2 4H12C12.5523 4 13 4.44772 13 5V11C13 11.5523 12.5523 12 12 12H2C1.44772 12 1 11.5523 1 11V5C1 4.44772 1.44772 4 2 4Z" fill="#232323"/>
+</svg>