Add Support for Trackpad Gestures

[gordoncheong]

What feature would you like to see?

Something I found to be very convenient from the Arc Browser is the ability to switch Workspaces by two-finger swipes inside the vertical tab bar region using the trackpad. This allows switching between Workspaces to be quicker and more intuitive on laptops.

What platform are you seeing the problem on?

Windows

Additional context

No response

[junedabat]

There's also trackpad gestures on Firefox to go to the previous page or the next page that I found to be quite handy.
For some reason it doesn't work on Zen

[mr-cheffy]

This issue should be discussed further. You can view and continue the discussion here: #827

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