Preserve original and save minified versions to specified folder

[coppicecottage]

🚀 Feature Request

Is your feature request related to a problem? Please describe.

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Describe the solution you'd like

The ability to specify a specific folder for outputting the minified files for each file type? e.g.
file1.js could be minified to /js-min/file1.min.js
file2.js could be minified to /js-min/file2.min.js
file1.css could be minified to /css-min/file1.min.css
etc

Settings for output folder locations for each file type css, js, etc
Setting to preserve the original file
Both the above to work automatically on source/original file save.

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Describe alternatives you've considered

I have been using the JS & CSS Minifier extension, unfortunately this extension is no longer being supported and would like to migrate to yours

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Additional context

[welcome]

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