Add auto indentation rules to all keyvalue languages

Author: Tewan

lang-config-kv3.json

@@ -20,5 +20,9 @@
         ["(", ")"],
         ["\"", "\""],
         ["'", "'"]
-    ]
+    ],
+    "indentationRules": {
+        "increaseIndentPattern": "\\{",
+        "decreaseIndentPattern": "\\}"
+    }
 }