Create SendToken on login

flutter/lib/api/api_client.dart

@@ -413,6 +413,22 @@ class APIClient {
     );
   }
 
+  static Future<KeyTokenWithToken> createKeyToken(TokenSource auth, String name, String perm, bool allChannels, {List<String>? channels}) async {
+    return await _request(
+      name: 'createKeyToken',
+      method: 'POST',
+      relURL: 'users/${auth.getUserID()}/keys',
+      jsonBody: {
+        'name': name,
+        'pem': perm,
+        'all_channels': allChannels,
+        if (channels != null) 'channels': channels,
+      },
+      fn: KeyTokenWithToken.fromJson,
+      authToken: auth.getToken(),
+    );
+  }
+
   static Future<List<SenderNameStatistics>> getSenderNameList(TokenSource auth) async {
     return await _request(
       name: 'getSenderNameList',