feat: add Gnome sort algorithm

[ibrahimelnemr]

Description of Change

This pull request adds an implementation for the Gnome sort algorithm under ./sort and adds its test and benchmark to the sorts_test.go file.

Checklist

• Added description of change
• Added file name matches File name guidelines
• Added tests and example, test must pass
• Added documentation so that the program is self-explanatory and educational - GoDoc guidelines
• Relevant documentation/comments is changed or added
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

[github-actions]

This PR is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[ibrahimelnemr]

Just noting that this PR is still relevant, please remove the stale label.