add default pin assignment as it was found in ESP32-HUB77-MatrixPanel-I2S-DMA#149

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lefty01 wants to merge 2 commits intopixelmatix:masterfrom

Commits on Jun 9, 2021

add default pin assignment as it was found in mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA
lefty01
committed

Commits on Jun 15, 2021

added MatrixClock example using NTP time/date and running on ESP32
lefty01
committed