Allow AutoLoad on disk and tape images

[TheTurtleIsHungry]

Currently when booting up the c64 core with an image mounted, you have to manually load and run. ('load "*",8,1' followed by 'run').
It would be convenient if this was automated - especially if the GamesMenu script is extended to support disk and tape images, and not just PRG/CRT/REU/TAP files.

Note that this is not the same as request #131 , it is a much simpler request.

As an old C64 and Amiga coder I agree with Sorgelig's comment on #131 that using keyboard is essential on C64 (and Amiga and other computers), and this isn't always what you want, but this would still be a convenient improvement for many use cases.

[sorgelig]

Not every disk can be started by load "*",8,1. Also some games don't like one Kernal, some - other kernals.
This is not working in 100%.
What could be automated is already automated.