Closes#156
turning off auto-r/w won't happen if the auto-r/w itself fails. still pops open a message saying error until you turn it off in the other window.
Decentralizes pocket injection logic from SysBotUI so that other auto-injectors can be passed in (future? like terrain/overworld items).
Adds validation to not modify items if the pocket data doesn't have the expected layout.
Closes#47 by implementing things in a more abstract & extendable way. Thanks @jfmherokiller for the example implementation which served as an inspiration!
