Add Changie (#4889)

* Add `Changie` schema

* Add `.changie.yml` as well

Author: Blacksmoke16

src/api/json/catalog.json

@@ -1097,6 +1097,12 @@
       "fileMatch": ["catalog-info.yaml"],
       "url": "https://www.schemastore.org/catalog-info.json"
     },
+    {
+      "name": "Changie",
+      "description": "Changie configuration file",
+      "fileMatch": [".changie.yaml", ".changie.yml"],
+      "url": "https://changie.dev/schema.json"
+    },
     {
       "name": "Charmcraft",
       "description": "Charmcraft project. Documentation: https://canonical-charmcraft.readthedocs-hosted.com",