fix(netcheck): Integrate https and icmp probes in probeplan

[flub]

Description

The HTTPS and ICMP probes only need to run after the STUN probes have
failed. This is done in the probe plan by sequencing them after the
stun probes. If the STUN probes succeed the probe_would_help logic
will shortcut execution.

Because this was all constantly looking up DerpNodes in the DerpMap
they are now created once and put on the heap when the plan is
created. This means the ProbeReports now carry enough data that they
don't need looking up yet again.

Closes #1138

Notes & open questions

Because we only have one derp server currently, we never reach enough regions to abort all the probes. This means we end up waiting for the start of the icmp & http probes. Once they start the probe-would-help check however aborts the probe sets.

I'm not really happy with that, it would be better if the probesets for a region would be aborted right away once the region is done. This ties in with the other refactor of moving the probe-would-help logic upside down that I've already mentioned (see #1180 (review)).

It's probably fine for now if we create an issue for it?

The solution is enough enough: 3bd0108

Change checklist

• Self-review.
• Documentation updates if relevant.
• Tests if relevant.

[Arqu]

/netsim branch bump-ipv6-config

[github-actions]

flub/netcheck-https-icmp-probeplan.b615aa294d9082021595a5be1fe1dcac35e4bfb5
Perf report:

test	case	throughput_gbps	throughput_transfer
iroh_latency_20ms	1_to_1	2.18	2.98
iroh_latency_20ms	1_to_3	6.73	8.04
iroh_latency_20ms	1_to_5	11.63	13.69
iroh_latency_20ms	1_to_10	20.50	23.46
iroh_latency_20ms	2_to_2	5.75	5.82
iroh_latency_20ms	2_to_4	9.79	11.46
iroh_latency_20ms	2_to_6	15.34	18.14
iroh_latency_20ms	2_to_10	21.42	27.87
iroh	1_to_1	2.87	2.92
iroh	1_to_3	6.99	8.45
iroh	1_to_5	12.37	13.71
iroh	1_to_10	21.73	25.50
iroh	2_to_2	5.70	5.80
iroh	2_to_4	9.20	11.31
iroh	2_to_6	16.37	18.22
iroh	2_to_10	25.33	28.78
iroh_latency_200ms	1_to_1	1.85	2.35
iroh_latency_200ms	1_to_3	6.24	7.17
iroh_latency_200ms	1_to_5	10.87	12.66
iroh_latency_200ms	1_to_10	22.23	25.26
iroh_latency_200ms	2_to_2	4.05	5.31
iroh_latency_200ms	2_to_4	8.90	11.05
iroh_latency_200ms	2_to_6	14.96	17.42
iroh_latency_200ms	2_to_10	23.14	27.58