feat(SPV-1583) errorx & RFC 7807 problem details for admin endpoints

[chris-4chain]

Examples:

{
  "detail": "Unsupported domain: 'krzysiek.4chain.pm'; Hint: Domain of provided paymail is not supported by this spv-wallet service",
  "instance": "config/unsupported_domain",
  "status": 400,
  "title": "Bad request",
  "type": "unsupported_domain"
}

{
  "detail": "Invalid avatar URL: 'asdasd/'; Hint: Avatar should have a valid scheme (http or https)",
  "instance": "paymail/invalid_avatar_url",
  "status": 422,
  "title": "Unprocessable entity",
  "type": "invalid_avatar_url"
}

{
  "detail": "Invalid avatar URL: 'https://asdasd^^'; Hint: Avatar should be a valid URL",
  "instance": "paymail/invalid_avatar_url",
  "status": 422,
  "title": "Unprocessable entity",
  "type": "invalid_avatar_url"
}

{
  "detail": "Invalid public key: 'wrong-key'",
  "instance": "",
  "status": 400,
  "title": "Bad request",
  "type": "invalid_public_key"
}

{
  "detail": "Invalid paymail address: test06031229krzysiek.test.4chain.space",
  "instance": "",
  "status": 400,
  "title": "Bad request",
  "type": "invalid_paymail_address"
}

{
  "detail": "Inconsistent alias@domain and address fields: test06031229, wrong-domain, [email protected]. Hint: use either alias and domain or address (not both)",
  "instance": "",
  "status": 400,
  "title": "Bad request",
  "type": "inconsistent_alias_domain_and_address"
}

{
  "detail": "",
  "instance": "db/not_found",
  "status": 404,
  "title": "Not found",
  "type": "not_found"
}

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 10.99291% with 251 lines in your changes missing coverage. Please review.

Project coverage is 34.50%. Comparing base (3ad6ae4) to head (c8ad1ef).

Files with missing lines	Patch %	Lines
logging/logging.go	0.00%	47 Missing ⚠️
errdef/clienterr/http_error.go	0.00%	37 Missing ⚠️
errdef/clienterr/builder.go	0.00%	29 Missing ⚠️
errdef/clienterr/mapper.go	0.00%	26 Missing ⚠️
errdef/problem_details.go	0.00%	18 Missing ⚠️
...ions/testabilities/assert_spvwallet_application.go	0.00%	15 Missing ⚠️
engine/tester/jsonrequire/funcs.go	0.00%	12 Missing ⚠️
engine/v2/paymails/paymails_service.go	0.00%	12 Missing ⚠️
engine/v2/users/users_service.go	0.00%	9 Missing ⚠️
errdef/clienterr/client_error_definition.go	0.00%	9 Missing ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #953      +/-   ##
==========================================
- Coverage   34.50%   34.50%   -0.01%     
==========================================
  Files         437      442       +5     
  Lines       20826    20913      +87     
==========================================
+ Hits         7186     7216      +30     
- Misses      13041    13101      +60     
+ Partials      599      596       -3     

Flag	Coverage Δ
unittests	34.50% <10.99%> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
actions/v2/admin/users/get.go	100.00% <100.00%> (+57.14%)	⬆️
api/gen.models.go	0.00% <ø> (ø)
cmd/main.go	0.00% <ø> (ø)
actions/v2/admin/users/paymail_add.go	85.18% <92.30%> (+5.18%)	⬆️
...ines/testabilities/mock_paymail_address_service.go	0.00% <0.00%> (ø)
actions/v2/admin/users/create.go	78.04% <84.21%> (+28.04%)	⬆️
config/utils.go	23.07% <0.00%> (-1.93%)	⬇️
engine/v2/database/repository/paymails.go	0.00% <0.00%> (ø)
engine/v2/database/repository/users.go	0.00% <0.00%> (ø)
engine/v2/database/errors/helpers.go	0.00% <0.00%> (ø)
... and 12 more

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