[SUGGESTION] Pair regex with for the string option for Slash commands

Basically, this is useful and while it does just save you a few lines of code, it would be pretty nice to have this as an option, perhaps it would be something like

regex: '/[\d]/',
regex-examples: ['15', '33']

This would go with a string most likely, regex would be the required format for the input, regex-examples could appear alongside the warning that your input does not match the required format:

Your input does not match the correct formatting. (Examples: "15", "33")

This would be highly useful for many people I assume, maybe even when having to input a hex code, I hope this gets seen!

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