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/cli.py

@@ -84,7 +84,13 @@ def main(argv=None):
             print("CPU:         %s °C  %s %%  fan %s RPM" % (s["cpu_temp"], st["cpu_load"], s["cpu_fan"]))
             print("GPU:         %s  fan %s RPM" % ("%s °C" % s["gpu_temp"] if s["gpu_temp"] else "asleep", s["gpu_fan"]))
             print("Fan mode:    %s" % st["config"]["fans"]["mode"])
-            print("Battery:     %s %% (%s), AC: %s" % (b.get("capacity"), b.get("status"), "yes" if b["ac_online"] else "no"))
+            line = "Battery:     %s %% (%s), AC: %s" % (b.get("capacity"), b.get("status"), "yes" if b["ac_online"] else "no")
+            if b.get("power_w"):
+                line += ", %s %.1f W" % ("charging at" if b.get("charging") else "drawing", b["power_w"])
+            if b.get("minutes_left") is not None:
+                h, m = divmod(b["minutes_left"], 60)
+                line += ", %d:%02d h %s" % (h, m, "until full" if b.get("charging") else "left")
+            print(line)
             k = st["config"]["keyboard"]
             print("Keyboard:    %s %s brightness %s" % (k["effect"], k["color"], k["brightness"]))
             for k, v in st["errors"].items():