Add method Ok() = Ok(nothing)

[tkf]

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@7d2576a). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #42   +/-   ##
=======================================
  Coverage        ?   83.33%           
=======================================
  Files           ?        6           
  Lines           ?      204           
  Branches        ?        0           
=======================================
  Hits            ?      170           
  Misses          ?       34           
  Partials        ?        0           

Flag	Coverage Δ
Pkg.test	83.33% <0.00%> (?)

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