Stm32f0308 disco mb1134 rev a for km master

Created by: karolmika

New symbol for STM32F0308 Discovery Board (MB1134 REV A) Datasheet: https://www.st.com/resource/en/user_manual/dm00092306-discovery-kit-for-stm32f030-value-line-microcontrollers-stmicroelectronics.pdf Footprint: https://github.com/karolmika/kicad-footprints/tree/STM32F0308-DISCO-MB1134-RE-A-(for-km_master)