Add schema URL for bottom version 0.12.0 (SchemaStore#5242)

Author: ClementTsang

src/api/json/catalog.json

@@ -594,6 +594,7 @@
       "url": "https://raw.githubusercontent.com/ClementTsang/bottom/main/schema/v0.10/bottom.json",
       "versions": {
         "nightly": "https://raw.githubusercontent.com/ClementTsang/bottom/main/schema/nightly/bottom.json",
+        "0.12.0": "https://raw.githubusercontent.com/ClementTsang/bottom/main/schema/v0.12.0/bottom.json",
         "0.11": "https://raw.githubusercontent.com/ClementTsang/bottom/main/schema/v0.11/bottom.json",
         "0.10": "https://raw.githubusercontent.com/ClementTsang/bottom/main/schema/v0.10/bottom.json",
         "0.9": "https://raw.githubusercontent.com/ClementTsang/bottom/main/schema/v0.9/bottom.json"