feat(SPV-1248) add domain check for paymail entry

[cain4chain]

• feat(paymail) add checkPaymailDomain function for domain validation
• feat(error) add error definition to engine code for invalid domain
• chore(paymailCreateAddress) add logic for domain validation check

Pull Request Checklist

• 📖 I created my PR using provided : CODE_STANDARDS
• 📖 I have read the short Code of Conduct: CODE_OF_CONDUCT
• 🏠 I tested my changes locally.
• ✅ I have provided tests for my changes.
• 📝 I have used conventional commits.
• 📗 I have updated any related documentation.
• 💾 PR was issued based on the Github or Jira issue.

[github-actions]

Manual Tests

💚 Manual testing by @chris-4chain resulted in success.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 21.42857% with 11 lines in your changes missing coverage. Please review.

Project coverage is 46.44%. Comparing base (1c1f102) to head (d67c3a1).

Files with missing lines	Patch %	Lines
actions/admin/paymail_addresses_old.go	0.00%	7 Missing ⚠️
actions/admin/paymail_addresses.go	42.85%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #828      +/-   ##
==========================================
+ Coverage   46.00%   46.44%   +0.43%     
==========================================
  Files         379      379              
  Lines       18203    18217      +14     
==========================================
+ Hits         8375     8461      +86     
+ Misses       9198     9116      -82     
- Partials      630      640      +10     

Flag	Coverage Δ
unittests	46.44% <21.42%> (+0.43%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
actions/admin/paymail_addresses.go	56.07% <42.85%> (+56.07%)	⬆️
actions/admin/paymail_addresses_old.go	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes

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