This works almost exactly like FF's custom MOTDs with the only difference being that they get defined in the config file for performance reasons.
Closes#86
* chore: Add the SPDX information to each file
Add copyright and licensing information as defined in version 3.0 of
the REUSE Specification.
* tweak format
---------
Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>