Add option to remove backup after deactivation

[michalpiekarski]

To reduce pollution of the workspace settings file, a configuration option should be added.
If set, the configuration backup will be removed after deactivating (successfully) the presentation mode.
This will incur small overhead due to the need for recreating the backup on each activation, but could help avoid unnecessary or unexpected, persistent modification of the workspace settings file.

[everdrone]

Same, my repos now all contain the backup file with "undefined" values

{
  "presentation-mode.configBackup": {
    "editor.lineHeight": "undefined",
    "editor.minimap.enabled": "undefined",
    "workbench.activityBar.visible": "undefined",
    "workbench.statusBar.visible": "undefined",
    "window.zoomLevel": "undefined"
  }
}

[brandoningli]

Echoing this request. Working in a team with a workspace settings file already, this makes the extension hard to justify using for the entire team since it clutters the file up.

If I have time sometime soon, I may attempt to implement this. Not being familiar with a framework hasn't stopped me yet!