Add support for MAPI format

[pokornyd]

Motivation

Adjusts transformation logic for assets and components/linked items so that their representation in management API can also be parsed and transformed. Adds a new dataType attribute to PortableTextComponent in order to differentiate between components and linked items.

Important

HTML attributes on object tag are used to differentiate between linked items and components in the rich text.

In DAPI, data-rel is used with either component or link value, data-type is item in both cases
In MAPI, data-type is used with either item or component value, data-rel is not present

For simplicity, I unionized all three possible values as a type for dataType property, to mirror the API response.
Should we consider adding logic to determine whether the representation is DAPI/MAPI and get rid of the redundant third value (i.e. using only item | component)?

Checklist

• Code follows coding conventions held in this repo
• Automated tests have been added
• Tests are passing
• Docs have been updated (if applicable)
• Temporary settings (e.g. variables used during development and testing) have been reverted to defaults

How to test

Try transforming an output from management API with all the Kontent.ai specific objects (links, components, linked items, assets...).

[IvanKiral]

also plz fix lint

[codecov]

Codecov Report

Attention: Patch coverage is 94.11765% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 94.80%. Comparing base (850bd38) to head (8da1dab).

Files	Patch %	Lines
src/utils/common-utils.ts	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #45      +/-   ##
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+ Coverage   94.79%   94.80%   +0.01%     
==========================================
  Files          19       19              
  Lines         365      366       +1     
  Branches       68       71       +3     
==========================================
+ Hits          346      347       +1     
  Misses         19       19              

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