Added argparse

CDRM-Keys.py

@@ -1,8 +1,20 @@
 # Import dependencies
 import CDRM_Modules
+import argparse
 
-# Run startup checks
-CDRM_Modules.Startup_Checks.run_startup_checks(startup=True)
+def setup_arg_parser():
+    parser = argparse.ArgumentParser(description="CDRM-Keys")
+    parser.add_argument('--pssh', action='store_true', help='Parse PSSH from MPD/HLS')
+    return parser
 
-# Run main menu
-CDRM_Modules.Main_Menu.main_menu()
+def main():
+    parser = setup_arg_parser()
+    args = parser.parse_args()
+
+    if args.pssh:
+        CDRM_Modules.Get_PSSH.get_pssh(mpd_or_m3u8_url=input("MPD/HLS URL: "))
+    else:
+        CDRM_Modules.Main_Menu.main_menu()
+
+if __name__ == "__main__":
+    main()