feat(SPV-1337): new transaction flow - type 42; paymail; operations

[chris-4chain]

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

ℹ️ Remember to ask team members to perform manual tests and to assign tested label after testing.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 49.04306% with 426 lines in your changes missing coverage. Please review.

Project coverage is 46.28%. Comparing base (e776a4b) to head (b1cdfa5).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
engine/paymail/paymail_service_provider.go	0.00%	133 Missing ⚠️
engine/transaction/record/tx_flow.go	64.76%	26 Missing and 11 partials ⚠️
actions/users/operations.go	0.00%	28 Missing ⚠️
engine/database/dao/transactions.go	62.90%	15 Missing and 8 partials ⚠️
engine/utils/collect_ancestors.go	0.00%	23 Missing ⚠️
engine/database/paginate.go	69.09%	11 Missing and 6 partials ⚠️
engine/transaction/record/record_transaction.go	54.28%	11 Missing and 5 partials ⚠️
actions/users/balance.go	0.00%	14 Missing ⚠️
engine/database/tracked_transaction.go	57.57%	10 Missing and 4 partials ⚠️
engine/tester/fixtures/tx_fixtures.go	17.64%	14 Missing ⚠️
... and 17 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #837      +/-   ##
==========================================
+ Coverage   46.19%   46.28%   +0.08%     
==========================================
  Files         371      379       +8     
  Lines       17881    18481     +600     
==========================================
+ Hits         8261     8554     +293     
- Misses       8999     9247     +248     
- Partials      621      680      +59     

Flag	Coverage Δ
unittests	46.28% <49.04%> (+0.08%)	⬆️

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

Files with missing lines	Coverage Δ
actions/paymailserver/register.go	100.00% <100.00%> (ø)
...ons/testabilities/fixture_spvwallet_application.go	88.88% <ø> (ø)
actions/users/routes.go	100.00% <100.00%> (ø)
engine/database/models.go	100.00% <100.00%> (ø)
engine/database/testabilities/fixture_database.go	100.00% <100.00%> (ø)
engine/database/testabilities/user_utxo_fixture.go	100.00% <100.00%> (ø)
engine/keys/type42/pki.go	100.00% <100.00%> (ø)
engine/testabilities/fixture_configopts.go	100.00% <100.00%> (ø)
engine/testabilities/fixture_engine.go	90.00% <100.00%> (-0.27%)	⬇️
.../outlines/internal/inputs/inputs_query_composer.go	100.00% <100.00%> (ø)
... and 30 more

... and 2 files with indirect coverage changes

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