Add charging indicator and pacman package, bump to 1.1.0

- Show charge/discharge power in watts, a battery graphic with charge
  bolt, a power history graph and the estimated time until full or
  remaining (respecting the 80 % charge limit) in the app, the panel
  widget, its tooltip and `predatorctl status`
- Add packaging/arch/PKGBUILD that builds a pacman package; the kernel
  module ships as DKMS source and is rebuilt for every kernel
- Bump version to 1.1.0

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

predator_control/daemon.py

@@ -214,7 +214,7 @@ class Daemon:
 
     def build_state(self):
         s = hw.sensors()
-        bat = hw.battery()
+        bat = hw.battery(limit_80=bool(self.battery_limit))
         st = {
             "version": __version__,
             "time": time.time(),