Create zed settings.json to use stylua

So this was the issue, lua extension doesn't use stylua by default so
the output wasn't as I wanted.

Author: codebycruz

.zed/settings.json

@@ -0,0 +1,19 @@
+{
+    "languages": {
+        "Lua": {
+            "format_on_save": "on",
+            "formatter": {
+                "external": {
+                    "command": "stylua",
+                    "arguments": [
+                        "--syntax=LuaJIT",
+                        "--respect-ignores",
+                        "--stdin-filepath",
+                        "{buffer_path}",
+                        "-",
+                    ],
+                },
+            },
+        },
+    },
+}