feat(rultor): just generate

[h1alexbel]

PR-Codex overview

The focus of this PR is to add a Rultor merge script and update the workflow in the project.

Detailed summary

• Added a Rultor merge script under rultor section in justfile
• Added just gen and updated test, format, doc, and clippy commands in justfile
• Added cargo install --version 1.30.1 just in .rultor.yml under install section
• Updated merge script in .rultor.yml to use just rultor command instead of individual commands
• Updated release script in .rultor.yml to check tag format before proceeding

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.82%. Comparing base (57dfdf2) to head (63ad99b).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #63   +/-   ##
=======================================
  Coverage   58.82%   58.82%           
=======================================
  Files           5        5           
  Lines          17       17           
=======================================
  Hits           10       10           
  Misses          7        7           

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