Shell integration: Explore decorations in xterm.js

[Tyriar]

This would let us show decorations in the buffer, now that we understand more about it xtermjs/xterm.js#1852

[pitust]

Can i say i hate this feature? I really do, it covers up the prompt and doesn't add anything of value (i can select things myself, thank you very much)

Also how on earth do you turn it off?

[Tyriar]

@pitust shell integration is off by default, but if you have that turned on the decorations will appear. It shouldn't be covering up the prompt, that would be a bug. It's been under heavy development the last 2 weeks and has been in a not so great state because of that.

You can turn off the decorations currently by setting this:

  "terminal.integrated.shellIntegration.commandIconDefault": "",
  "terminal.integrated.shellIntegration.commandIconError": "",
  "terminal.integrated.shellIntegration.commandIcon": "",

This will likely change though as that's not that easy to figure out.

[Tyriar]

Created #143737 to follow this up