refactor(SPV-1057): rename draft to transaction outlines in new tx flow.

[dorzepowski]

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 21.62162% with 87 lines in your changes missing coverage. Please review.

Project coverage is 46.60%. Comparing base (426c6c6) to head (4e3260b).

Files with missing lines	Patch %	Lines
...outlines/testabilities/assert_draft_transaction.go	0.00%	68 Missing ⚠️
...utlines/testabilities/fixture_draft_transaction.go	0.00%	10 Missing ⚠️
engine/client_transaction.go	0.00%	3 Missing ⚠️
...ansaction/outlines/transaction_outlines_service.go	50.00%	3 Missing ⚠️
...utlines/testabilities/ability_draft_transaction.go	0.00%	2 Missing ⚠️
engine/client.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #739   +/-   ##
=======================================
  Coverage   46.60%   46.60%           
=======================================
  Files         328      328           
  Lines       13378    13378           
=======================================
  Hits         6235     6235           
  Misses       6569     6569           
  Partials      574      574           

Flag	Coverage Δ
unittests	46.60% <21.62%> (ø)

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

Files with missing lines	Coverage Δ
...ernal/mapping/outline/outline_request_to_engine.go	72.97% <100.00%> (ø)
...ns/internal/mapping/outline/outline_to_response.go	66.66% <100.00%> (ø)
actions/transactions/outlines.go	70.00% <100.00%> (ø)
engine/client_internal.go	65.35% <100.00%> (ø)
engine/client_options.go	67.84% <100.00%> (ø)
...ransaction/outlines/internal/evaluation/context.go	86.66% <ø> (ø)
engine/transaction/outlines/outputs/op_return.go	96.87% <100.00%> (ø)
engine/transaction/outlines/outputs/paymail.go	90.32% <100.00%> (ø)
engine/transaction/outlines/outputs/spec.go	100.00% <100.00%> (ø)
engine/transaction/outlines/transaction_spec.go	100.00% <100.00%> (ø)
... and 8 more

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