Added support for browser rpc

[AndreasArvidsson]

When using Cursorless everywhere in Talon js the accessibility is not good enough for browsers. I'm working on my own browser extension to mitigate this.

What this pull request is doing is adding a new Cursorless everywhere context. When the new tag is set Cursorless everywhere will use the command client instead of access ability.

Checklist

• [/] I have added tests
• [/] I have updated the docs and cheatsheet
• [/] I have not broken the cheatsheet

[pokey]

I haven't looked closely, but it is well contained so I won't stand in the way. Maybe @phillco has opinions here

Also of course looking at how rango does things for browser rpc as that is quite battle tested at this point

[AndreasArvidsson]

I haven't looked closely, but it is well contained so I won't stand in the way. Maybe @phillco has opinions here

Also of course looking at how rango does things for browser rpc as that is quite battle tested at this point

Rango uses the clipboard and we are using the command client. I think our implementation is much better.

[pokey]

Fine I won't stand in the way of this one