enable URL scheme links

[jhconning]

Feature description

Notable should allow URL scheme links to work for trusted apps such as vscode://, imdone://, zotero://
They currently appear to be blocked.

Feature motivation

Notable commands can be issued via URL scheme from outside of the app (e.g. notable://note/_scratch works from a browser or from imdone). This is useful and powerful. A link such as notable://note/scratch within a note in notable will also trigger a command. However, URL scheme links for outside apps such as vscode, zotero, and imdone do not appear to work. Nothing happens on click. This suggests they are being blocked by the app.

While there could be security concerns inherent to authorizing all URL schemes, the apps I have listed are all well-established and they would greatly enhance the value of the Notable app (e.g. zotero:// links would pull up citations in a zotero database, or vscode:// links could jump to code in an IDE).

I suggest either

(1) enable all URL scheme links (each user should be responsible for what they click on in their own notes ... if you're concerned make this a setting), or
(2) have a whitelist of authorized apps where URL scheme links are allowed.

[fabiospampinato]

There should be a setting for this, and when the app is asked to trigger an unknown protocol it just asks the user if they want to allow it, and if so it adds it to the allowed ones automatically.