Add autoplay blocking patch/functionality

[ajleitzke]

Description

Add autoplay blocking patch/functionality

Who's implementing?

• I'm willing to implement this feature myself

The problem

Autoplay can be incredibly annoying on sites, and can use additional bandwith.

Possible solutions

Add a patch (and feature flag) blocking autoplay functionality such as Brave or Thorium

Alternatives

No response

Additional context

I have zero C++ knowledge, but can experiment with creating a patch.

[networkException]

This has pretty much been proved to be too hard to implement, see #1565 for example