feat: add cmdx configuration to catalog (SchemaStore#5172)

- https://github.com/suzuki-shunsuke/cmdx
- https://github.com/suzuki-shunsuke/cmdx/blob/d1c7b646fbb7e017f59f835138ff8522657ea746/pkg/config/config.go#L85

Author: scop

src/api/json/catalog.json

@@ -605,6 +605,12 @@
       "fileMatch": [],
       "url": "https://www.schemastore.org/cinnamon-spice.info.json"
     },
+    {
+      "name": "cmdx.yaml",
+      "description": "cmdx configuration file",
+      "fileMatch": [".cmdx.yaml", ".cmdx.yml", "cmdx.yaml", "cmdx.yml"],
+      "url": "https://raw.githubusercontent.com/suzuki-shunsuke/cmdx/refs/heads/main/json-schema/cmdx.json"
+    },
     {
       "name": "CodeRabbit",
       "description": "Supercharge your entire team with AI-driven contextual feedback & smart chat",