draft: improve CPU cores affinity to NUMA nodes

[lukashino]

Redmine ticket: https://redmine.openinfosecfoundation.org/issues/7036

This is a draft to discuss the user and implementation details of the ticket.

Proposal for modes of assignment:

    // threading.cpu-assignment:
    //   - legacy - assign as usual
    //   - auto - use hwloc to determine NUMA locality of the NIC and try to assign a core from this NUMA node.
    //            If it fails then use the other NUMA node.
    //            Using this approach e.g. on bonded devices/aliased and any other will not work
    //            Warn/Notify a user when device's NUMA node cannot be determined.
    //            Mention in the docs that NUMA locatity supports PCIe addresses and Kernel interfaces
    //   - manual - in workers CPU set either:
    //              - Specify in one line ([ "eth0@1,2,3,4,7-9", "eth1@10,11" ])
    //              - Specify threading in a list:
    //              - worker-cpu-set:
    //                - interface: eth0
    //                    cpu: [ 1,2,3,4 ]
    //                    mode: "exclusive" 
    //                    prio:
    //                      high: [ 3 ]
    //                      default: "medium" 

The current code draft works in somewhat auto mode - it tries to pick CPU core from the NUMA node from where the interface is.

Added doc update label to not trigger QA.