Add tsdoc.json to the catalog (#4070)

This file is described on
https://tsdoc.org/pages/packages/tsdoc-config/.

Author: remcohaszing

src/api/json/catalog.json

@@ -4860,6 +4860,12 @@
       "fileMatch": ["tsd.json"],
       "url": "https://json.schemastore.org/tsd.json"
     },
+    {
+      "name": "tsdoc.json",
+      "description": "TSDoc configuration file",
+      "fileMatch": ["tsdoc.json"],
+      "url": "https://developer.microsoft.com/json-schemas/tsdoc/v0/tsdoc.schema.json"
+    },
     {
       "name": "tsdrc.json",
       "description": "TypeScript Definition manager (tsd) global settings file",