chore: setup type-coverage

[TkDodo]

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Sandbox	Source
tannerlinsley/react-query: basic	Configuration
tannerlinsley/react-query: basic-typescript	Configuration

[codecov[bot]]

Codecov Report

Merging #3489 (08b9892) into master (b5675e9) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3489   +/-   ##
=======================================
  Coverage   96.41%   96.41%           
=======================================
  Files          45       45           
  Lines        2286     2286           
  Branches      642      642           
=======================================
  Hits         2204     2204           
  Misses         79       79           
  Partials        3        3           

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