Add new Dashboard

[Emily3403]

I have implemented an alternate dashboard for grafana that doesn't use the deprecated angular plugin and that displays some additional metrics such as "Session Downloaded / Uploaded", "All Time Downloaded / Uploaded" and a more expanded version of the "Torrents" table as well as a "Incomplete Torrents" Bar gauge.

I have taken extensive inspiration from the qbittorrent dashboard (essentially copying it and replacing metrics) so most of the design credit go to the owner of that project.

It isn't perfect yet, however I decided to share as I can hopefully save some others a bit of work. See the attached screenshot for how it looks! I might be updating it in the future.