Add Nodes View Variant with configurable set of key Metrics on a glance per node

[spacehamster87]

Currently, the nodes view renders one metric for all nodes or all metrics for one node.

New feedback suggested a "mixed view", allowing a configurable amount of metrics per node in a scrollable list.

Exact locationis TBD, at first probably implemented as a switch to change to "detailed list".

Pre-configured set of metrics proposed

• cpu_load
• acc_utilization
• mem_utilization
• network metric (tbd)