feat(dursto): Add commit operation to Registry

[NSant215]

Part of RV-862.
Closes RV-863.

What

Implement commit functionality on the Registry.

Why

required part of the interface.

How

• The Registry is primarily the vector of databases.

• a registry-commit is computed by:

  • committing each database and creating a vector of database hashes.
  • get the merkle root hash of the resulting vector

• store registry commits alongside database commits i.e. commits/<registry-commit> is where it will be stored

• the contents of this file will be the serialised vector of database hashes.

Manually Testing

make all

Tasks for the Author

• Link all Linear issues related to this MR using magic words (e.g. part of, relates to, closes).
• Eliminate dead code and other spurious artefacts introduced in your changes.
• Document new public functions, methods and types.
• Make sure the documentation for updated functions, methods, and types is correct.
• Add tests for bugs that have been fixed.
• Explain changes to regression test captures when applicable.
• Write commit messages in agreement with our guidelines.
• Self-review your changes to ensure they are high-quality.
• Complete all of the above before assigning this MR to reviewers.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.29%. Comparing base (94b0af2) to head (d79d8dc).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #718      +/-   ##
==========================================
+ Coverage   91.26%   91.29%   +0.02%     
==========================================
  Files         108      108              
  Lines       20232    20232              
  Branches    20232    20232              
==========================================
+ Hits        18465    18470       +5     
+ Misses       1391     1386       -5     
  Partials      376      376              

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[kurtisc]

Sorry, I have review pending

[kurtisc]

LGTM as long as someone more familiar with the seq tree approves