Adjust led blinking periods

All patterns that blink use 500ms on, 1500 ms off period.

[mce] Adjust led blinking periods
Tune debug led patterns

Added "Blue" pattern. Adjusted blinking periods.
Merge pull request #104 from spiiroin/led_blink

Adjust led blinking periods
Bump mce version to 1.20.1
Tune blinking led colors

Blinking via HW uses full intensity colors, tune configuration to
match this reality.

[mce] Tune blinking led colors
Merge pull request #105 from spiiroin/blinking_colors

Tune blinking led colors
Bump mce version to 1.20.2