Support Express Router in useApitally()

[itssimon]

Fixes #25

[codecov]

Codecov Report

Attention: Patch coverage is 80.76923% with 10 lines in your changes missing coverage. Please review.

Project coverage is 89.37%. Comparing base (e250827) to head (da0a666).

Files	Patch %	Lines
src/express/listEndpoints.js	77.77%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
+ Coverage   89.29%   89.37%   +0.07%     
==========================================
  Files          16       16              
  Lines        1411     1431      +20     
  Branches      144      144              
==========================================
+ Hits         1260     1279      +19     
  Misses        149      149              
- Partials        2        3       +1     

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