Feature/refactoring gpio

...ary/stm32f072xb/gpio/abstract-gpio/abstract-gpio-init.hpp

library/stm32f072xb/gpio/abstract-gpio/abstract-gpio.cpp

library/stm32f072xb/gpio/abstract-gpio/abstract-gpio.hpp

...y/stm32f072xb/gpio/alternate-gpio/alternate-gpio-init.hpp

library/stm32f072xb/gpio/alternate-gpio/alternate-gpio.hpp

library/stm32f072xb/gpio/gpio-register/gpio-afr.hpp

library/stm32f072xb/gpio/gpio-register/gpio-moder.hpp

library/stm32f072xb/gpio/gpio-register/gpio-ospeedr.hpp

library/stm32f072xb/gpio/gpio-register/gpio-otyper.hpp

library/stm32f072xb/gpio/gpio-register/gpio-pin.hpp

library/stm32f072xb/gpio/gpio-register/gpio-port.hpp

library/stm32f072xb/gpio/gpio-register/gpio-pupdr.hpp

library/stm32f072xb/gpio/gpio-register/gpio-register.hpp

library/stm32f072xb/gpio/gpio.cpp

library/stm32f072xb/gpio/gpio.hpp

library/stm32f072xb/gpio/input-gpio/input-gpio-init.hpp

library/stm32f072xb/gpio/input-gpio/input-gpio.hpp

library/stm32f072xb/gpio/output-gpio/output-gpio-init.hpp

library/stm32f072xb/gpio/output-gpio/output-gpio.hpp

library/stm32f072xb/gpio/uart-gpio/uart-gpio-type.hpp