Allow to disable viewport features calculation

[alasarr]

This PR allows disabling viewport features calculation on demand. It requires to add an optional parameter to useCartoLayerProps, so the api would be like this:

// null because the second parameter is uniqueIdProperty. default to cartodb_id or geoid
useCartoLayerProps(source, null, viewportFeatures=false).

I've changed useCartoLayerProps to object destructing, so the api is:

useCartoLayerProps({ source,  viewportFeatures: false }).

@borja-munoz this update needs to be added to the reference

[coveralls]

Pull Request Test Coverage Report for Build 1095207390

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.1%) to 75.463%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/react-api/src/hooks/useCartoLayerProps.js	0	1	0.0%

Totals
Change from base Build 1094704887:	-0.1%
Covered Lines:	709
Relevant Lines:	876

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💛 - Coveralls