Add link to http://localhost:5001/webui/ in the settings

[estebanabaroa]

if the client is electron desktop, somewhere in the settings there should be a link to "http://localhost:5001/webui/". the link should only be visible if the client is electron desktop, not visible on web client.

this link should open in a new browser tab, not inside electron (for security)

this page displays information about the user's local IPFS node