pinwheel: Lock instead of suspend on lid close

Have logind ignore the lid switch and suspend/hibernate keys so the
machine stays reachable over SSH with the lid closed. SUPER + SHIFT + x
remains the way to suspend; closing the lid now only locks the screen.

hosts/pinwheel/modules/power/default.nix

@@ -40,6 +40,14 @@ in
         enable = true;
       };
 
+      logind.settings.Login = {
+        HandleLidSwitch = "ignore";
+        HandleLidSwitchExternalPower = "ignore";
+        HandleLidSwitchDocked = "ignore";
+        HandleSuspendKey = "ignore";
+        HandleHibernateKey = "ignore";
+      };
+
       tlp = {
         enable = true;