add documentation for LSRRO flowsheet

[ElmiraShamlou]

Addresses: #1219 for LSRRO

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.94%. Comparing base (3785348) to head (a9b1691).
Report is 30 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1450   +/-   ##
=======================================
  Coverage   93.94%   93.94%           
=======================================
  Files         310      310           
  Lines       33206    33206           
=======================================
  Hits        31194    31194           
  Misses       2012     2012           

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[MarcusHolly]

A couple of minor suggestions

[MarcusHolly]

A couple more instances where dimensionless needs to be added

[MarcusHolly]

LGTM - the second reviewer should provide a more technical review about what's stated in this documentation

[adam-a-a]

LGTM - just that one change to throw the citation note at the top instead of bottom