feat(router): make the router immune to missing trailing slashes

[frgfm]

This PR ensures requests are redirected to the endpoint with trailing slashes to avoid unnecessary 404 response.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.86%. Comparing base (84c21f7) to head (8f5edf1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #148   +/-   ##
=======================================
  Coverage   83.86%   83.86%           
=======================================
  Files          29       29           
  Lines         917      917           
=======================================
  Hits          769      769           
  Misses        148      148           

Flag	Coverage Δ
unittests	83.86% <100.00%> (ø)

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