* fork rules.mk to be version-specific
* remove pimentoso/paddino02 as a keyboard target
This commit makes it so QMK API doesn't identify pimentoso/paddino02 as a build target on its own, because there's no actionable code here.
* add image to readme.md
* unify rules.mk files to QMK AVR template
- remove Bootloader selection comment block
- sort Build Option rules
- unify inline comments