CMSIS pack manager: add STM32WB15CCUx
CMSIS pack manager: add STM32WB15CCUx

Values from Keil.STM32WBxx_DFP.1.2.0.pack
https://www.keil.com/dd2/pack/

mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed