Some developers would be happier with the gtest version provided from
their package manager. Use it if it is installed the package provide
cmake support.
Fixed: https://github.com/ArthurSonzogni/FTXUI/issues/551
Add the `SliderOption` option supporting:
```cpp
{
Ref<T> value;
ConstRef<T> min = T(0);
ConstRef<T> max = T(100);
ConstRef<T> increment = (max() - min()) / 20;
GaugeDirection direction = GaugeDirection::Right;
Color color_active = Color::White;
Color color_inactive = Color::GrayDark;
};
```
In particular, this supports multiple direction. This resolves:
https://github.com/ArthurSonzogni/FTXUI/issues/467
This one do not support adding a label. The old constructors can still
be used to have a label.
This commit deserve to be cut into at least 8 sub commit. Sorry, I
acknowledge this is bad... Here are the new features:
* dom decorator: bold, dim, underlined, inverted.
* component mechanism
* components
* menu
* toogle
