[MAINT] Move save file mapping to its own repo

[monkeyman192]

I added the save file mapping generation to this repository since it heavily relies on libMBIN to generate the mapping. This however could be moved to a new repository such as "MBINCompiler-extras" (eg) which could contain a number of various projects which utilise libmbin directly and would benefit from being able to be updated automatically as part of the CI using the solution described here: https://github.community/t/triggering-by-other-repository/16163/2 This could allow further projects to be developed as .dll's which are updated automatically when MBINCompiler is updated.