Add Wiznet mining hat

Author: revoxhere

README.md

@@ -172,6 +172,7 @@ All tests were performed using the DUCO-S1 algorithm **without fasthash accelera
 ### Please note that these softwares are not developed by us and we do not give any guarantees that use of them will not result in an account getting banned. Treat them as a curiosity. 
 
   ### Other miners known to work with Duino-Coin:
+  *   :point_right: [**RP2040-HAT-MINING-C**](https://github.com/Wiznet/RP2040-HAT-MINING-C) - **WIZnet RP2040** mining stack
   *   [DuinoCoinEthernetMiner](https://github.com/Pumafron/DuinoCoinEthernetMiner) - Arduino Ethernet shield Miner by Pumafron
   *   [STM8 DUCO Miner](https://github.com/BBS215/STM8_DUCO_miner) - STM8S firmware for mining DUCO by BBS215
   *   [DuinoCoinbyLabVIEW](https://github.com/ericddm/DuinoCoinbyLabVIEW) - miner for LabVIEW family by ericddm