update dialog to accept faker default nickname launch sys.argv, prepare_json fix typehint/arg name, commit sizeof helper func, update launch.py for new client/main.py

launch.py

@@ -1,18 +1,24 @@
 import sys
 
+from faker import Faker
+
 if __name__ == "__main__":
-    if len(sys.argv) != 2:
+    arg_count = len(sys.argv) - 1
+    if arg_count < 1:
         print('Please provide one argument besides the file describing whether to launch the client or server.')
         print('Client/C/1 to launch the client. Server/S/2 to launch the server.')
     else:
         if str(sys.argv[1]).lower() in ['client', 'c', '1']:
-            from PyQt5.QtWidgets import QApplication
-            from client.gui import MainWindow
+            nick = None
+            if arg_count >= 2:
+                if sys.argv[2] == 'random':
+                    fake = Faker()
+                    nick = fake.user_name()
+                else:
+                    nick = sys.argv[2]
 
-            app = QApplication([])
-            app.setApplicationName("TCPChat Client")
-            m = MainWindow()
-            app.exec_()
+            from client.main import main
+            main(nick)
         elif str(sys.argv[1]).lower() in ['server', 's', '2']:
             from server import main
             main.receive()