advance shell integration and session support

shell/ferese-shell/assets/icons/battery.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="none">
+  <rect x="1.4" y="5.5" width="15.4" height="9" rx="2.4" stroke="currentColor" stroke-width="1.8"/>
+  <path d="M18 8.1c.6.2 1 .8 1 1.5v.8c0 .7-.4 1.3-1 1.5V8.1Z" fill="currentColor"/>
+  <rect x="3.8" y="7.9" width="10.6" height="4.2" rx="1" fill="currentColor"/>
+</svg>