19207 pay service integration

[kialj876]

*Issue:*bcgov/entity#19207

Description of changes:

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the namex license (Apache 2.0).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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❗ Current head 931f3fb differs from pull request most recent head e992c93. Consider uploading reports for the commit e992c93 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #105   +/-   ##
=======================================
  Coverage        ?   84.51%           
=======================================
  Files           ?       27           
  Lines           ?      736           
  Branches        ?        0           
=======================================
  Hits            ?      622           
  Misses          ?      114           
  Partials        ?        0           

Flag	Coverage Δ
btr-api	84.51% <0.00%> (?)

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[hfekete]

Looks good!
Can you add tickets for todos if we dont have them already, thanks !