Add an STM32H730 bsp

bsp: add project build doc

bsp: add to ci list

bsp: clean up

doc: add STM32H730-EspHostedEVB readme

bsp: esphosted evb

Author: kaidegit

.github/workflows/bsp_buildings.yml

@@ -190,6 +190,7 @@ jobs:
                 - "stm32/stm32h563-st-nucleo"
                 - "stm32/stm32h503-st-nucleo"
                 - "stm32/stm32h723-st-nucleo"
+                - "stm32/stm32h730-esphosted-evb"
                 - "stm32/stm32h743-armfly-v7"
                 - "stm32/stm32h743-atk-apollo"
                 - "stm32/stm32h743-openmv-h7plus"