Proposed TODO: Tool sources should be their own repository(ies)

[PikalaxALT]

Motivation: We currently have copies of the tools included in ruby which are required by other agb decompilations (emerald, firered, berry fix, mmbn6). There is a need to keep these tools synchronized across repositories to ensure consistency between users and contributors regardless of when they cloned the respective projects.

Suggestion 1: Repurpose pokeruby-tools to provide the sources rather than static Windows binaries, and submodule it.

Suggestion 2: Create new repositories for each individual tool, and submodule each.

[PikalaxALT]

WIP in emerald implements a third solution which would establish a package manager for the tools and install them to a custom path in the system root.