add the stripMargin utility

[massimosiani]

What the title says.

[codecov]

Codecov Report

Merging #699 (2ee6276) into main (14c756d) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #699      +/-   ##
==========================================
+ Coverage   85.02%   85.07%   +0.05%     
==========================================
  Files         124      124              
  Lines        1629     1635       +6     
  Branches       38       36       -2     
==========================================
+ Hits         1385     1391       +6     
  Misses        244      244              

Impacted Files	Coverage Δ
modules/core/shared/src/main/scala/Fragment.scala	100.00% <100.00%> (ø)

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