* decompile sub_8091290
* decompile sub_80912c8
* rename functions / struct field
* more names
* decompile 80913A0
* decompile GetItemMove
* decompile sub_80913E0
* rename function
* decompile CanSellItem function
* rename inventory struct
* add some item check functions
* fix renaming stuff
* this file shouldnt have been here
* forgot merge conflict
* decompile more item functions
* rename some stuff
* fix HM/TM naming
* Update src/code_801AFA4.c
Use enum value for USED_TM
* Fix incorrect value
* decompile sub_80915F4
* decompile HasGummiItem
* decompiled another function and renamed stuff
* decompile 2 smaller functions
* more functions
* more decompiling and renaming
* redo change that was undone in the merge
* Makefile: move over to gcc for preproc and ditch cpp
* INSTALL: rewrite INSTALL
* README: add CI badge
* Makefile: make tools build before anything else
