DEV: Document some more parms for the cat create api docs (#19024)

spec/requests/api/schemas/json/category_create_request.json

@@ -11,6 +11,34 @@
     "text_color": {
       "type": "string",
       "example": "f0fcfd"
+    },
+    "parent_category_id": {
+      "type": "integer"
+    },
+    "allow_badges": {
+      "type": "boolean"
+    },
+    "slug": {
+      "type": "string"
+    },
+    "topic_featured_links_allowed": {
+      "type": "boolean"
+    },
+    "permissions": {
+      "type": "object",
+      "additionalProperties": true,
+      "properties": {
+        "everyone": {
+          "type": "integer",
+          "example": 1
+        },
+        "staff": {
+          "type": "integer"
+        }
+      }
+    },
+    "search_priority": {
+      "type": "integer"
     }
   },
   "required": [