Add VCC-GND STM32F407VET6 Mini

Boards-Summary.md

@@ -34,3 +34,4 @@ In addition to the pyboard the following have been identified as possibly suitab
 * [[FEZ Cerb40 II|Board-FEZ-Cerb40]] *($24.95)* - same chip as pyboard - **done**
 * [[FEZ Lemur|Board-FEZ-Lemur]] *($24.95)* - STM32F401
 * [[G30HDR Module|Board-G30HDR]] *($14.95)* - STM32F401
+* [[VCC-GND STM32F407VET6 Mini|Board-VCC-GND-F407]] *($11 USD)* - STM32F407 - **started**