doc and style: formatted the whole codebase to pep8 plus added documentation where necessary

app/Controller/help_screen.py

@@ -1,15 +1,14 @@
 
-from inspect import isgenerator
 from View import HelpScreenView
 from Model import HelpScreenModel
-from View.components import MediaCardsContainer
-from Utility import show_notification
-from kivy.clock import Clock
+
+
 class HelpScreenController:
+    """The help screen controller
+    """
     def __init__(self, model:HelpScreenModel):
         self.model = model
         self.view = HelpScreenView(controller=self, model=self.model)
-        # self.update_anime_view()
 
     def get_view(self) -> HelpScreenView:
         return self.view