feat: Add get step scale executable

[menailj]

Pull request description:

Add executable for running Get Step Scale Tuning

Changes or fixes:

Add executable and new config options.

Examples:

[github-actions]

This is your first PR, thank you for contributing to MaCh3!

[github-actions]

Super-linter summary

Language	Validation result
MARKDOWN	Fail ❌
YAML	Pass ✅

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/github/workspace/README.md:111:62 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:196:75 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:202:140 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:337:102 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:480:28 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:613:68 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:660:153 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:702:60 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:738:12 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:742:181 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:744:176 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:795:2 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]
/github/workspace/README.md:798:2 error MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]

[KSkwarczynski]

Can you maybe add description to Tutorial how to use it for example here:
https://github.com/mach3-software/MaCh3Tutorial#mcmc-diagnostic
There maybe better place.

The main point in tutorial is to have working examples with description.

[KSkwarczynski]

LGTM