Added multithreading libs

gui/modules/core/qt_updater.py

@@ -0,0 +1,5 @@
+from qt_thread_updater import get_updater
+
+
+def call(func, *args):
+    get_updater().call_in_main(func, *args)

requirements.txt

@@ -11,3 +11,5 @@ validators
 pydub
 pafy
 youtube-dl==2020.12.2
+ezzthread
+qt-thread-updater