fix(eslint-plugin): [type-annotation-spacing] handle constructor types

[bradzacher]

Fixes #1663

[typescript-eslint]

Thanks for the PR, @bradzacher!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[codecov]

Codecov Report

Merging #1664 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1664      +/-   ##
==========================================
- Coverage   95.36%   95.35%   -0.02%     
==========================================
  Files         147      147              
  Lines        6904     6906       +2     
  Branches     1985     1986       +1     
==========================================
+ Hits         6584     6585       +1     
  Misses        112      112              
- Partials      208      209       +1