Feature/round_up method on DurationRound trait

[MagnumTrader]

This PR Solves #1650.

Implementation of duration_round_up method by inverting the duration_trunc method.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.01%. Comparing base (82bacb8) to head (c0f9d2f).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1651      +/-   ##
==========================================
+ Coverage   90.87%   91.01%   +0.13%     
==========================================
  Files          37       37              
  Lines       17143    17342     +199     
==========================================
+ Hits        15579    15784     +205     
+ Misses       1564     1558       -6     

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[djc]

Looks good modulo a small nit.

[djc]

Thanks!