Enable/disable new tab for all files show be merged into one command

[calmwaves111]

Thank you for your outstanding contribution here #20
and in my opinion it is more convenient that Enable/disable new tab for all files are merged into one command “toggle default newtab”
and The rest is the same: Enable/Disable open all PDFs with default app

Because I usually set shortcuts key for this two commands, I think a shortcut key is easier to remember, and you already have the prompt: new import_ Objectian2. Notice ("Opener: New tab for all files enabled"); So there's no need to worry about not knowing the current status

[lukemt]

Oh @calmwaves111 thank you I didn't think of that! I'll implement this. Thank you for the feedback!