Support Multiple Browsers

[CITguy]

This project should be updated to support any browser that supports extensions.

1. Chrome (currently supported)
2. Firefox
3. Safari
4. Edge (chromium-based)
5. Opera

Resources

• https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions
• https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Anatomy_of_a_WebExtension
• https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API