Add actual user search.

src/services/new_api/user_search.js

@@ -0,0 +1,16 @@
+import utils from './utils.js'
+
+const search = ({query, store}) => {
+  return utils.request({
+    store,
+    url: '/api/pleroma/search_user',
+    params: {
+      query
+    }
+  }).then((data) => data.json())
+}
+const UserSearch = {
+  search
+}
+
+export default UserSearch