treefmt: Add no-positional-arg-support (#5600)

Author: spotdemo4

src/schemas/json/treefmt.json

@@ -78,6 +78,10 @@
             "priority": {
               "type": "integer",
               "default": 0
+            },
+            "no-positional-arg-support": {
+              "type": "boolean",
+              "default": false
             }
           },
           "additionalProperties": false