updates zoom/fit bounds controls to use own map reference

Updates zoom controls to use its own map reference according to the mapId passed. Also, it updates zoom logic to rely on the buttons' interactivity to zoom in/out.
Removed logic that handled disabled styles in ZoomControls and FitBoundsControls to rely on disabled button state. This way there is a single logic to rely on (the one telling the button when is disabled) and less risk of side effects with several logics.
Moved Controls component and its descendant to LayerManager level becoming descendant of Map component and granting access to map reference through current's property in useMap hook. This way allows using map and controls without declaring any id in case there is only a single map on the page. In case there are several maps, passing an id is mandatory to map and controls.
Removed onFitBoundsChange property from FitBoundsControl to follow ZoomControls behaviour and let the internal map reference handle it.

Note: I have renamed the property from id to mapId to not be mistaken with the HTML attribute.

Vizzuality / front-end-scaffold