feat(minor-ampd): stellar verifier set verifier

[haiyizxx]

Description

AXE-4640

Todos

• Unit tests
• Manual tests
• Documentation
• Connect epics/issues

Steps to Test

Expected Behaviour

Other Notes

[codecov]

Codecov Report

Attention: Patch coverage is 91.86603% with 34 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@0da965d). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
ampd/src/lib.rs	0.00%	14 Missing ⚠️
ampd/src/stellar/http_client.rs	0.00%	11 Missing ⚠️
ampd/src/handlers/stellar_verify_verifier_set.rs	97.94%	4 Missing ⚠️
ampd/src/stellar/verifier.rs	98.24%	3 Missing ⚠️
ampd/src/handlers/config.rs	85.71%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #617   +/-   ##
=======================================
  Coverage        ?   93.66%           
=======================================
  Files           ?      234           
  Lines           ?    33322           
  Branches        ?        0           
=======================================
  Hits            ?    31210           
  Misses          ?     2112           
  Partials        ?        0           

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