fix: adding schema for fee estimates

without this, the response is simply undefined

Author: agraebe

docs/api/core-node/get-fee-transfer.schema.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "description": "GET fee estimates",
+  "title": "CoreNodeFeeResponse",
+  "type": "string",
+  "additionalProperties": false
+}

docs/index.d.ts

@@ -172,6 +172,11 @@ export interface ContractSourceResponse {
   proof: string;
 }
 
+/**
+ * GET fee estimates
+ */
+export type CoreNodeFeeResponse = string;
+
 /**
  * GET request that core node information
  */

docs/openapi.yaml

@@ -676,6 +676,8 @@ paths:
           description: Success
           content:
             application/json:
+              schema:
+                $ref: ./api/core-node/get-fee-transfer.schema.json
               example:
                 $ref: ./api/core-node/get-fee-transfer.example.json