refactor(hm/gui): reorganize modules

This way we are not `import`ing stuff which is slow.

It also makes it easier to turn off the sway module.

modules/hm/gui/sway.nix

@@ -23,6 +23,11 @@ in
             else
               builtins.abort "no command configured for ${terminal}";
           menu = "${pkgs.fuzzel}/bin/fuzzel --terminal '${termCmd}'";
+          cmdOnce = command: { inherit command; };
+          cmdAlways = command: {
+            inherit command;
+            always = true;
+          };
         in
         {
           modifier = "Mod 4";