modules: Mass update of .pretty module libraries

Haven't updated these recently, so go ahead and update them for any
users of the newer versions of KiCad.
scripts: Added mods_to_pretty conversion script
modules: jumper: Add jumper modules

Also, remove existing solder jumper modules from ab2_header.

There are two 3P jumper options here, with a default for either position
one or position two (only applicable to the 3D model).
mod: jumper: Changed solder jumper silkscreen

This way is a bit more compact. Silkscreen text can potentially be
reduced in size in the future, which will further compact these solder
jumpers.
3d_mods: passive: Add radial 6.3x11mm capacitor
3d_mods: passive: Add trim pot model

NOTE: Needs additional attention for colorization.
mods: Add new .pretty modules for jumpers