[6.x] collection.create can be used with a mapping

[scottinet]

What does this PR do?

The API route collection:create can be used with a mapping since Kuzzle 1.3.0, allowing the creation of a collection directly with a mapping specified: https://docs.kuzzle.io/api-documentation/controller-collection/create

This feature is missing from SDKs, and this PR fixes that for the version 6 of this SDK

Other changes

• Dependencies update

Boyscout

• This package's version number in package.json and package-lock.jon files has been changed to 6.0.0 (prev. value: 5.0.11)

[codecov-io]

Codecov Report

Merging #301 into 6.x will increase coverage by 2.78%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              6.x    #301      +/-   ##
=========================================
+ Coverage   94.72%   97.5%   +2.78%     
=========================================
  Files          28      28              
  Lines        1328    1325       -3     
=========================================
+ Hits         1258    1292      +34     
+ Misses         70      33      -37

Impacted Files	Coverage Δ
src/controllers/collection.js	100% <ø> (ø)	⬆️
src/networkWrapper/protocols/abstract/common.js	94.94% <0%> (+36.12%)	⬆️

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