Add unity3d to apps
diff --git a/src/apps/personal/unity.nix b/src/apps/personal/unity.nix
new file mode 100644
index 0000000..2f10b8f
--- /dev/null
+++ b/src/apps/personal/unity.nix
@@ -0,0 +1,5 @@
+{ pkgs, ... }: {
+    home.packages = with pkgs; [
+        unityhub
+    ];
+}