Export types along the default export

[HarelM]

Launch Checklist

• 4.0.0-pre.3 does not export Map in typescript #3563

This should hopefully improve the future typings exported issues with both dts-bundle-generator and typedoc.
Also removed unused files and added typecheck to prevent future failures.

Fixes #3563

• Confirm your changes do not include backports from Mapbox projects (unless with compliant license) - if you are not sure about this, please ask!
• Briefly describe the changes in this PR.
• Link to related issues.
• Include before/after visuals or gifs if this PR includes visual changes.
• Write tests for all new functionality.
• Document any changes to public APIs.
• Add an entry to CHANGELOG.md under the ## main section.

Before:

After:
No errors or warnings.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b364c52) 85.91% compared to head (1546e10) 85.92%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3564      +/-   ##
==========================================
+ Coverage   85.91%   85.92%   +0.01%     
==========================================
  Files         244      244              
  Lines       48213    48262      +49     
  Branches     5150     5150              
==========================================
+ Hits        41421    41470      +49     
  Misses       6792     6792              

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