Centralize Massdrop LED instruction code, add new effects#3

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just-another-jxliu wants to merge 12 commits intomasterfrom

jxliu/centralize-massdrop-rgb-code

Commits on Nov 12, 2018

Commits on Nov 17, 2018

Move Massdrop LED instructions out of arm_atsam, add Y-axis patterns
just-another-jxliu
committed

Commits on Nov 18, 2018

Copy LED map for ALT keyboard into config, add RGB example
just-another-jxliu
committed

Commits on Nov 23, 2018

Update massdrop/alt:reywood to use common alt LED functions
just-another-jxliu
committed

Commits on Nov 26, 2018