feat(taskbar): allow users to configure the taskbar

there are now options to:
- enable a battery icon (nixos95.taskbar.battery-plugin.enable)
- change the home icon (nixos95.taskbar.homeIcon)
- define pinned applications (nixos95.taskbar.applications)

nixos95/dotfiles/battery.rc

@@ -0,0 +1,19 @@
+display_label=false
+display_icon=true
+display_power=false
+display_percentage=false
+display_bar=false
+display_time=false
+tooltip_display_percentage=true
+tooltip_display_time=false
+low_percentage=30
+critical_percentage=20
+action_on_low=1
+action_on_critical=1
+hide_when_full=0
+colorA=rgb(119,118,123)
+colorH=rgb(143,240,164)
+colorL=rgb(248,228,92)
+colorC=rgb(237,51,59)
+command_on_low=
+command_on_critical=