Feature: Add widget for Truenas

[chazzbg]

This is a simple widget for TrueNas Systems.
I have only TrueNas Scale, but the API seems stable and it should work on FreeNas, TrueNas Core and TrueNas Scale.

Sample config:

- truenas:
    icon: truenas-scale
    href: http://truenas.host.or.ip
    description: Homepage is awesome
    widget:
        type: truenas
        url: http://truenas.host.or.ip
        fields: ['load', 'uptime', 'alerts']
        username: root
        password: password

Preview:

[JazzFisch]

@chazzbg please merge latest into your branch and resolve any conflicts.

[shamoon]

I took care of the merge =)

As with a couple other things, this is tough to test without Truenas (not necessarily your problem OP but still we need to get it at least verified).

[chazzbg]

@shamoon Truenas can be installed on VM in 10 minutes. Default installation could be sufficient to test and verify the integration.

[chazzbg]

I've updated the uptime formatting. Here are some examples. I think i can live with that. Still this is a homepage, not a detailed monitoring tool :)

[shamoon]

Thats great for the uptime, thanks

[chazzbg]

Conflicts are fixed

[github-actions]

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