Add bxt_lightstyle #672

Job	Run time
rustfmt	11s
clippy - Ubuntu	34s
stable - Ubuntu - debug	1m 41s
clippy - Windows	2m 18s
stable - Debian (cross to Windows) - debug	1m 2s
stable - Ubuntu - release	1m 30s
stable - Debian (cross to Windows) - release	1m 15s
beta - Ubuntu - debug	1m 21s
beta - Debian (cross to Windows) - debug	1m 5s
stable - Windows - debug	3m 29s
stable - Windows - release	6m 3s
beta - Windows - debug	2m 18s
Publish Wiki	0s
	22m 47s

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