When designing a new board we need to specify somewhere which are all the used GPIO. This is useful in order to setup a hierarchy of namespaces and to give meaningful names to the needed GPIOs.
For example, assuming we are developing a new board for our rocket we will have a set of sensors, such as IMUs and barometers. These sensors will use some communication protocols, such as SPI or I2C, or maybe both.
In the `hwmapping.h` file we can list all the GPIOs that we need.
The `hwmapping.h` file can be found under: `skyward-boardcore/libs/miosix-kernel/arch/<your-arch>/<your-board>/interfaces_impl/`.
