After hitting 700 commits last week, I thought it'd be a good time to
update the project status in the Readme. This change also pulls out the
toolchain scripts that moved to jsix-os/toolchain, and updates the
Readme about that as well.
This change moves Bonnibel from a separate project into the jsix tree,
and alters the project configuration to be jsix-specific. (I stopped
using bonnibel for any other projects, so it's far easier to make it a
custom generator for jsix.) The build system now also uses actual python
code in `*.module` files to configure modules instead of TOML files.
Target configs (boot, kernel-mode, user-mode) now moved to separate TOML
files under `configs/` and can inherit from one another.
