It is required to redirect keyboard input (both physical or not) when
a GUI line edit is focused. This means other components cannot be
activated on key presses.
Therefore, this new component is meant as a higher-level abstraction
compared to the `keyboard`/`pad`/`mouse` components, which:
- Implements the same APIs provided by `keyboard`, `mouse` and `pad`.
- Returns the same results as the APIs above if no GUI element is
focused, no input otherwise.
Note: replacing calls to `keyboard`/`pad`/`mouse` with `input` will be
implemented in a future commit.
Xavier Del Campo Romero