- add slash screen for CLUE #499

Job	Run time
build (circuitplayground_nrf52840)	50s
build (clue_nrf52840)	30s
build (feather_nrf52832)	30s
build (feather_nrf52833_express)	30s
build (feather_nrf52840_express)	38s
build (feather_nrf52840_sense)	39s
build (feather_nrf52840_sense_tft)	28s
build (itsybitsy_nrf52840_express)	29s
build (metro_nrf52840_express)	29s
build (ledglasses_nrf52840)	38s
build (adm_b_nrf52840_1)	37s
build (ae_bl652_bo)	27s
build (aramcon_badge_2019)	49s
build (aramcon2_badge)	35s
build (arcade_feather_nrf52840_express)	29s
build (arduino_nano_33_ble)	39s
build (bast_ble)	34s
build (bluemicro_nrf52833)	29s
build (bluemicro_nrf52840)	29s
build (challenger_840_ble)	32s
build (ebyte_e104_bt5032a)	36s
build (ebyte_e73_tbb)	33s
build (electronut_labs_papyr)	36s
build (ikigaisense_vita)	32s
build (m60_keyboard)	42s
build (mdk_nrf52840_dongle)	30s
build (mikoto)	42s
build (nice_nano)	29s
build (nrf52840_bboard)	30s
build (nRF52840_connect_kit)	33s
build (nrf52840_m2)	39s
build (ohs2020_badge)	31s
build (particle_argon)	33s
build (particle_boron)	32s
build (particle_xenon)	29s
build (pca10056)	39s
build (pca10059)	33s
build (pca10100)	34s
build (pitaya_go)	29s
build (raytac_mdbt50q_db_40)	37s
build (raytac_mdbt50q_rx)	28s
build (sparkfun_nrf52840_micromod)	39s
build (waveshare_nrf52840_eval)	40s
build (xiao_nrf52840_ble)	47s
build (xiao_nrf52840_ble_sense)	31s
	25m 45s

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