Add Rubocop as a remote schema (SchemaStore#4807)

Author: joeldrapper

src/api/json/catalog.json

@@ -4880,6 +4880,12 @@
       "fileMatch": ["*.resjson"],
       "url": "https://json.schemastore.org/resjson.json"
     },
+    {
+      "name": "Rubocop",
+      "description": "A Ruby code style checker (linter) and formatter",
+      "fileMatch": ["*.rubocop.yml"],
+      "url": "https://www.rubyschema.org/rubocop.json"
+    },
     {
       "name": "Ruff",
       "description": "Ruff, a fast Python linter",