[Feature Suggestion] Nintendo switch "Official SDK" injection support

[baconwaifu]

With the removal of python 2 from distros, running it "standalone" is getting harder, so injection seems preferable. The switch is a fairly bog-standard renpy environment, just with a few "interesting" limitations:

Injection can't be done through file insertion, must be done either through replacement or pickle save-bombing (The latter being my preferred technique for dealing with their custom 'zng' image encoding, will attach my tools when I have time to get to the machine they're on). EDIT: can't be done through rpyc overwrite either, you have to overwrite bytecode.rpyb and probably update the ~INDEX file. Or you can just backup and clobber the persistent store pickle instead, it's loaded at around the same time, and isn't subject to the various index-hells.

Another limitation is a complete lack of arbitrary file writing; the interpreter blackholes file writes from python. There is however, a way to get files out: It has to be able to write to savegames somehow, and that happens to be done in pure-python. They also have a custom binary index for those as well, though, so you have to either figure out how to "create" savegames, or overwrite an existing one.

EDIT: more details on insertion points (debugging a mod, game does not like itself trying to update bytecode.rpyb)