feat: add on chain blueprint class, its serialization, and a method to create the tx from the wallet

[pedroferreira1]

Acceptance Criteria

• Create On Chain Blueprint class with object serialization methods.
• Create method in the wallet facade to create an ocb transaction.
• Add integration tests for creating and executing nano contract methods from an ocb.

Note: the integration tests will only succeed after we release a new docker image for tx mining service and hathor core with ocb support (and update the docker-compose with them).

[codecov]

Codecov Report

Attention: Patch coverage is 7.27273% with 51 lines in your changes missing coverage. Please review.

Project coverage is 65.37%. Comparing base (9c78996) to head (18dfe89).

Files with missing lines	Patch %	Lines
src/nano_contracts/on_chain_blueprint.ts	0.00%	32 Missing ⚠️
src/new/wallet.js	0.00%	13 Missing and 4 partials ⚠️
src/utils/transaction.ts	50.00%	2 Missing ⚠️

❌ Your patch check has failed because the patch coverage (7.27%) is below the target coverage (70.00%). You can increase the patch coverage or adjust the target coverage.
❌ Your project check has failed because the head coverage (65.37%) is below the target coverage (75.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (9c78996) and HEAD (18dfe89). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (9c78996)	HEAD (18dfe89)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #811       +/-   ##
===========================================
- Coverage   81.02%   65.37%   -15.66%     
===========================================
  Files          91       92        +1     
  Lines        7190     7241       +51     
  Branches     1517     1523        +6     
===========================================
- Hits         5826     4734     -1092     
- Misses       1351     2422     +1071     
- Partials       13       85       +72     

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