Add PyObjC Cocoa UI (mac_cocoa.py) and update build to install pyobjc

Co-authored-by: Copilot <[email protected]>

setup.py

@@ -1,11 +1,11 @@
 from setuptools import setup
 
-APP = ['mac_native.py']
+APP = ['mac_cocoa.py']
 DATA_FILES = []
 OPTIONS = {
     'argv_emulation': True,
     'packages': ['clients'],
-    'includes': ['tkinter','requests', 'dotenv'],
+    'includes': ['objc','AppKit','requests', 'dotenv'],
     'resources': ['templates'],
     'plist': {
         'CFBundleName': 'MediaEpisodesViewer',