surface: Add tablet-mode

hosts/miku.nix

@@ -63,7 +63,7 @@
       #xournalpp.enable = true;
       zsh.enable = true;
       #office.enable = true;
-      #plasma.enable = true;
+      plasma.enable = true;
       gaming.enable = true;
     };
     services = {
@@ -151,7 +151,6 @@
         wayland = true;
         enable = true;
       };
-      desktopManager.plasma5.enable = true;
     };
     earlyoom.enable = lib.mkForce false;
   };