Add Dsl.scala in the cats ecosystem

[Atry]

No description provided.

[Atry]

See https://static.javadoc.io/com.thoughtworks.dsl/dsl_2.12/1.0.0-RC2/com/thoughtworks/dsl/domains/cats$.html for the usage

[codecov-io]

Codecov Report

Merging #2184 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2184   +/-   ##
=======================================
  Coverage   94.75%   94.75%           
=======================================
  Files         330      330           
  Lines        5568     5568           
  Branches      201      201           
=======================================
  Hits         5276     5276           
  Misses        292      292

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[kailuowang]

simple doc change, merge with one sign off. Note that this will show up in Readme but not on the website until the next release.