Remove uses of Autohook from clientvideooverrides.cpp

[ASpoonPlaysGames]

Depends on #780

Code review:

• The original function is prefixed with o_p so any times where the old AUTOHOOK was calling the original function it should now be calling that instead.
• The hook function is prefixed with h_ so any times where we would be wanting to call the hooked function from other functions should now be calling that instead

Testing:

• Check logs to make sure that all of the changed hooks are being created properly
• Make sure that .bik files can still be loaded from mod directories (custom main menus)

[F1F7Y]

Changes look good :>

[GeckoEidechse]

Confirmed working in testing. My custom main menu video still played :D