[New variant] STM32F407ZGT6 Mini

Add [New variant] STM32F407ZGT6 Mini and Generic_F407Zx
Supersed stm32duino#1130

Signed-off-by: dds90 <40141422+dds90@users.noreply.github.com>
Co-authored-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>

Author: dds90

README.md

@@ -220,6 +220,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :green_heart:  | STM32F411CE | [WeAct Black Pill](https://stm32-base.org/boards/STM32F411CEU6-WeAct-Black-Pill-V2.0) | *1.9.0* | [More info](https://github.com/WeActTC/MiniF4-STM32F4x1) |
 | :green_heart:  | STM32F407VE<br>STM32F407VG | [STM32 F4VE / Black F407VET6](https://stm32-base.org/boards/STM32F407VET6-STM32-F4VE-V2.0) | *1.4.0* | STM32F407VG support since *1.5.0* |
 | :green_heart:  | STM32F407ZE<br>STM32F407ZG | Black F407ZE / Black F407ZG | *1.5.0* |  |
+| :yellow_heart: | STM32F407ZG | vcc-gnd.com Mini | ***2.0.0*** | [More info](http://www.vcc-gnd.com/rtd/html/STM32/quickref.html#stm32f4) |
 | :green_heart:  | STM32F407VE | [vcc-gnd.com Mini](https://stm32-base.org/boards/STM32F407VET6-VCC-GND-Small) | *1.4.0* | [More info](http://vcc-gnd.com/rtd/html/STM32/quickref.html#stm32f4) |
 | :green_heart:  | STM32F401RC | [STM32F Core Board](https://stm32-base.org/boards/STM32F401RCT6-STM32F-Core-Board) | *1.7.0* |  |
 | :green_heart:  | STM32F407VG | [DIYMORE STM32F407VGT](https://stm32-base.org/boards/STM32F407VGT6-diymore) | *1.5.0* |  |

boards.txt

@@ -1850,6 +1850,16 @@ GenF4.menu.pnum.THUNDERPACK_F411.build.variant_h=variant_{build.board}.h
 GenF4.menu.pnum.THUNDERPACK_F411.build.variant=STM32F4xx/F411C(C-E)
 GenF4.menu.pnum.THUNDERPACK_F411.build.peripheral_pins=-DCUSTOM_PERIPHERAL_PINS
 
+# VCCGND_F407ZGT6 board
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini=VCCGND F407ZGT6 Mini
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.upload.maximum_size=1048576
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.upload.maximum_data_size=131072
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.build.board=VCCGND_F407ZGT6_MINI
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.build.product_line=STM32F407xx
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.build.variant_h=variant_{build.board}.h
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.build.variant=STM32F4xx/F411C(C-E)
+GenF4.menu.pnum.VCCGND_F407ZGT6Mini.build.peripheral_pins=-DCUSTOM_PERIPHERAL_PINS
+
 # Generic F446RCTx
 GenF4.menu.pnum.GENERIC_F446RCTX=Generic F446RCTx
 GenF4.menu.pnum.GENERIC_F446RCTX.upload.maximum_size=262144