docs: Add info about TS based config

[danielkcz]

Should have been part of #941, but oh well :)

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[codecov]

Codecov Report

Merging #943 (6997fcd) into main (8d23e88) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #943   +/-   ##
=======================================
  Coverage   82.99%   82.99%           
=======================================
  Files          52       52           
  Lines        1582     1582           
  Branches      427      427           
=======================================
  Hits         1313     1313           
  Misses        162      162           
  Partials      107      107           

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