feat(user): add UTM parameters support in user creation and sign-up

[Dobrunia]

Changes: implemented UTM parameter capturing to sign-up flow

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.62%. Comparing base (02c2717) to head (e6a179f).
⚠️ Report is 69 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #514   +/-   ##
=======================================
  Coverage   54.62%   54.62%           
=======================================
  Files           9        9           
  Lines         119      119           
  Branches       10       10           
=======================================
  Hits           65       65           
+ Misses         54       50    -4     
- Partials        0        4    +4     

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