Add RTSP Proton CtMod (#470)

* Add RTSP Proton CtMod

* Gate RTSP Proton ctmod behind Advanced Mode

We do this for NorthStar Proton, probably makes sense
Helps declutter the dropdown too.

---------

Co-authored-by: Eamonn Rea <[email protected]>

Author: DavidoTek

pupgui2/resources/ctmods/ctmod_rtspgeproton.py

@@ -0,0 +1,23 @@
+# pupgui2 compatibility tools module
+# Roberta
+# Copyright (C) 2021 DavidoTek, partially based on AUNaseef's protonup
+
+from PySide6.QtCore import QCoreApplication
+
+from pupgui2.resources.ctmods.ctmod_00protonge import CtInstaller as GEProtonInstaller
+
+
+CT_NAME = 'RTSP Proton'
+CT_LAUNCHERS = ['steam', 'advmode']
+CT_DESCRIPTION = {'en': QCoreApplication.instance().translate('ctmod_rtspgeproton', '''Fork of GE-Proton with enhanced Windows Media Foundation support.''')}
+
+
+class CtInstaller(GEProtonInstaller):
+
+    BUFFER_SIZE = 4096
+    CT_URL = 'https://api.github.com/repos/SpookySkeletons/proton-ge-rtsp/releases'
+    CT_INFO_URL = 'https://github.com/SpookySkeletons/proton-ge-rtsp/releases/tag/'
+
+    def __init__(self, main_window = None):
+        super().__init__(main_window)
+