Improvements

[bstiq]

• via keymaps for skeletyl/scylla/tbkmini

• update diagrams for those

• DEFAULT_FOLDER = bastardkb/..../v2/splinky_3 to rules.mk for the relevant boards

• pretty up all the via jsons

• left trackball support (partial - 3x6 already implemented)

• move the EE_CLR and QK_BOOT on some keymaps so that they align with the placement on the dilemma v2 via keymap (harder to accidentally press)

• enable RGB effects on default images for Scylla, TBK Mini, Skeletyl

• add bootmagic for charybdis and dactyl

[burkfers]

add bootmagic for charybdis and dactyl
handled by #54

[burkfers]

move the EE_CLR and QK_BOOT on some keymaps so that they align with the placement on the dilemma v2 via keymap (harder to accidentally press)
handled by #55

[burkfers]

DEFAULT_FOLDER = bastardkb/..../v2/splinky_3 to rules.mk for the relevant boards
handled by #56

[0xcharly]

Thanks for all the good work, @finrod09!

[bstiq]

Glad to see progress on those, thanks!