Single STM32 header

This project offers two headers, st/stm32cmsis.h and st/stm32hal.h that you can use to replace your stm32f1xx.h or stm32f1xx_hal_rcc.h and similar in your codebase, so switching between STM32 series becomes a lot less painful.

Requirements

• Compiler which supports __has_include, so C23 / C++17 or above
• Add a #define HAL_RCC_MODULE_ENABLED for the needed HAL modules before including the HAL header