Add WAVE103 (Eink 10.3 sold by Waveshare) #125

Job	Run time
build-arduino (release-v4.4, weather)	1m 42s
build (release-v4.4, calibration_helper)	3m 9s
build (release-v4.4, demo)	4m 9s
build (release-v4.4, dragon)	4m 0s
build (release-v4.4, grayscale_test)	3m 20s
build (release-v4.4, mpd_status)	3m 22s
build (release-v4.4, terminal)	3m 17s
build (release-v4.4, www-image)	3m 9s
build (release-v5.1, calibration_helper)	3m 50s
build (release-v5.1, demo)	3m 28s
build (release-v5.1, dragon)	3m 15s
build (release-v5.1, grayscale_test)	3m 37s
build (release-v5.1, mpd_status)	3m 28s
build (release-v5.1, terminal)	3m 14s
build (release-v5.1, www-image)	3m 17s
	50m 17s

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