wip: even more niri twieaks

modules/base/keyd.nix

@@ -0,0 +1,16 @@
+{...}: {
+  services.keyd = {
+    enable = true;
+    keyboards.default = {
+      ids = [ "*" ];
+      settings = {
+        main = {
+          # Bind mouse-foward to meta+middlemouse if held
+          mouse2 = "timeout(mouse2, 150, M-middlemouse)";
+          # Bind mouse-back to meta if held
+          mouse1 = "overload(meta, mouse1)";
+        };
+      };
+    };
+  };
+}