consolidate home-manager config to a module with one entrypoint

home/dconf/keyboard.nix

@@ -0,0 +1,14 @@
+# { config, lib, pkgs, ... }:
+
+{
+  dconf = {
+    settings = {
+      "org/gnome/desktop/wm/keybindings" = {
+        # These are largely useless on most normal systems
+        # and conflict with VS Code's default keybinds for "Copy Line Up/Down"
+        move-to-workspace-up = [ ];
+        move-to-workspace-down = [ ];
+      };
+    };
+  };
+}