Add a monitoring tab on the modern host details page

[ekohl]

This first introduces a REST API to get the monitoring results for a host. That is then shown as a tab on the host details page.

I debated a card in the details tab, but this leaves space for more complex items, such as downtime selection.

Some review needs to be done on the exact representation. I chose for a simple table, but perhaps we want to show more columns that also indicates downtime and acknowledgements.

[ekohl]

I appreciate the review. This really was me trying to figure all this stuff out by reading existing code. I'll try to get back to it after the holidays

[sbernhard]

For which hosts is this shown? I would expect, that it is only shown for monitored hosts?

[ekohl]

For which hosts is this shown? I would expect, that it is only shown for monitored hosts?

The tab is shown for all hosts, but the table with services is only rendered if there's a monitoring proxy assigned.

[sbernhard]

For which hosts is this shown? I would expect, that it is only shown for monitored hosts?

The tab is shown for all hosts, but the table with services is only rendered if there's a monitoring proxy assigned.

Would it be possible to hide it for hosts, which are not monitored?