add mellow keyboard (#24319) #979

Job	Run time
Determine concurrency	38s
Compile keymap default / Generate targets (default)	29s
Compile keymap default / Compile group 01 (default)	4m 54s
Compile keymap default / Compile group 02 (default)	5m 28s
Compile keymap default / Compile group 03 (default)	5m 34s
Compile keymap default / Compile group 04 (default)	4m 55s
Compile keymap default / Compile group 05 (default)	3m 40s
Compile keymap default / Compile group 06 (default)	3m 26s
Compile keymap default / Compile group 07 (default)	3m 36s
Compile keymap default / Compile group 08 (default)	3m 15s
Compile keymap default / Compile group 09 (default)	3m 11s
Compile keymap default / Compile group 10 (default)	2m 38s
Compile keymap default / Compile group 11 (default)	2m 36s
Compile keymap default / Compile group 12 (default)	2m 23s
Compile keymap default / Compile group 13 (default)	20s
Compile keymap default / Compile group 14 (default)	2m 15s
Compile keymap default / Compile group 15 (default)	20s
Compile keymap default / Repack artifacts	9s
Consolidation	1s
	49m 48s

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