Add regex to check ip/url

[Tony763]

Description

PR for issue #79 Adds regex to check ip/url supplied to settings.

Type of PR

• [ ] Bugfix
• [x] Feature implementation
• [ ] Refactor of code (without functional changes)
• [ ] Documentation improvements
• [ ] Test improvements

Testing

https://regex101.com/r/rGpkEo/1

Thanks

Regex based on https://stackoverflow.com/a/50790119/9442005 by Allan

[Tony763]

Hi @krisgesling, check please :slightly_smiling_face:

[Tony763]

@krisgesling Should be ready :slightly_smiling_face: