Added 'allowedFileTypes' array list to settings. By default now allow…

[Lukas238]

This modification add a user settings option called allowedFileTypes, as an array of allowed file types.

• The plugin will only open file types in the list.
• If the list is empty, then the plugin will allow any file type to open.
• By default the allowed file types are:
  • HTML
  • Plain Text
  • JSON
  • Markdown

Regards!!