Main motivation is to fix wrong view state computed when first rendering is done with hidden flag.
First reproduced by application with tabbed layout where all the tabs are rendered using hidden flag.
This use case has been added to the storybook to demonstrate the issue, along with a 'triggerHome' control (in a previous PR).

The current PR brings:
- onResize() function to handle resizing
- use a React reducer to handle Z scaling
  Add support for PageUp/PageDown and Shift modifier
- use a React reducer to compute the global 3D bounding box from the reportBoundingBox callback of the layers
- introduce a ViewController class to generate the DeckGL views and viewState
  This brings all the computations in one place/one step by providing state change allowing to fine-tune the computations
- use bounding box from the 'cameraPosition' (if set as zoom field) instead of the data bounding box

Fixes:
- initial viewState is correct, even when rendered with 'hidden' flag set to true
- triggerHome now respects current zScale

In the end, the final implementation drops down to 6 React useEffect,  from the 16 initial ones !

Update story

Add script to debug jest tests