Maniac Patch: Final contribution

[Ghabry]

This concludes my Maniac Patch contributions for now.

New stuff:

• Most Conditional Branch enhancements except "Game was just loaded"
• The Keyboard part of KeyInputProcEx (not very useful, see it as an alternative to Ineluki). Joypad mapping part not supported as we have our own Joypad code and remapper (soon ^^')
• Control Global Save Command
• Control Variable enhancements including the Expression parser
  • Unsupported are assignment operators (+=, etc.) because they assign in expressions which violates the purpose of the ControlVariables command
  • Array operations are unsupported as I consider them not too useful

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The final one for later this year is Show String Picture. This is lots of work to add.

Fix #491

[Ghabry]

Needs some more testing but is otherwise finished.

[gadesx]

I've heard that the latest maniacs patch it's a bit broken, atleast the editor.
I don't know what release version works fine to use "show string picture"
Latest actually: patch_maniacs_211010

[carstene1ns]

I have no idea about manic patch games, that use all features to test.

Nice refactor, though.