feat: expose features API

Author: r4mmer

src/api/featureApi.ts renamed to src/api/featuresApi.ts

@@ -10,6 +10,7 @@ import healthApi from './api/health';
 import versionApi from './api/version';
 import * as axios from './api/axiosInstance';
 import metadataApi from './api/metadataApi';
+import featuresApi from './api/featuresApi';
 import { Storage } from './storage/storage';
 import { MemoryStore } from './storage/memory_store';
 import network from './network';
@@ -70,6 +71,7 @@ export {
   healthApi,
   versionApi,
   metadataApi,
+  featuresApi,
   errors,
   ErrorMessages,
   constants,