Ability to clear the Terminal

[kube]

Description of the new feature/enhancement

VSCode Terminal or iTerm allow you to entirely clear the buffer of a tab.

For example, in VSCode, it's possible to create a keybinding to clear the terminal this way:

{
  "key": "ctrl+k",
  "command": "workbench.action.terminal.clear"
}

This is still not possible in Terminal.

[j4james]

I think this is probably a duplicate of issue #1882.

[kube]

I think this is probably a duplicate of issue #1882.

@j4james Indeed. Thanks!