feat: add endpoit to create an on chain blueprint

[pedroferreira1]

Acceptance Criteria

• Include here all things that this PR should solve

Missing:

• API Docs
• Unit and integration tests

Security Checklist

• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.

[codecov]

Codecov Report

Attention: Patch coverage is 5.88235% with 16 lines in your changes missing coverage. Please review.

Project coverage is 87.48%. Comparing base (1d1c899) to head (99ee2ee).

Files with missing lines	Patch %	Lines
...rc/controllers/wallet/nano-contracts.controller.js	0.00%	14 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (5.88%) is below the target coverage (70.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #519      +/-   ##
==========================================
- Coverage   90.19%   87.48%   -2.71%     
==========================================
  Files          54       54              
  Lines        2325     2342      +17     
  Branches      439      441       +2     
==========================================
- Hits         2097     2049      -48     
- Misses        211      266      +55     
- Partials       17       27      +10     

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