Add marker handles to profiler-cli thread network

[canova]

Main | Deploy preview

Note that this depends on #6171 since it touches the schemas.txt. That PR needs to be reviewed first. Please ignore the first commit in this PR (as that belongs to that PR) and only review the second one.
The previous PR has landed.

Every request entry in thread network now has a marker handle, so a slow request can be fed straight to zoom push m-N or marker info m-N without re-finding it via thread markers. Other commands in the cli usually have marker handles if they show any markers, we didn't include that before, but it's always good to include it.

Example profile: https://share.firefox.dev/4aGPacn

pq thread network before:

[Thread: t-0 (GeckoMain) | View: Full profile | Full: 6.639s]
Network requests in thread t-0 (https://firefox.com) — 11 requests
Summary:
Cache: 0 hit, 0 miss, 11 unknown
Phase totals:
TTFB: 3.635s
Download: 626.10ms
Main thread wait: 1.551s
https://symbolication.services.mozilla.com/symbolicate/v5
200 h2 size=221.1KB duration=708.27ms
Phases: TTFB=414.43ms DL=22.913ms wait=32.476ms
https://symbolication.services.mozilla.com/symbolicate/v5
200 h2 size=1705.9KB duration=1.345s
Phases: TTFB=700.41ms DL=178.28ms wait=205.48ms
https://symbolication.services.mozilla.com/symbolicate/v5
200 h2 size=116.1KB duration=705.23ms
Phases: TTFB=298.93ms DL=39.541ms wait=113.42ms

After:

[Thread: t-0 (GeckoMain) | View: Full profile | Full: 6.639s]
Network requests in thread t-0 (https://firefox.com) — 11 requests
Summary:
Cache: 0 hit, 0 miss, 11 unknown
Phase totals:
TTFB: 3.635s
Download: 626.10ms
Main thread wait: 1.551s
m-1 https://symbolication.services.mozilla.com/symbolicate/v5
200 h2 size=221.1KB duration=708.27ms
Phases: TTFB=414.43ms DL=22.913ms wait=32.476ms
m-2 https://symbolication.services.mozilla.com/symbolicate/v5
200 h2 size=1705.9KB duration=1.345s
Phases: TTFB=700.41ms DL=178.28ms wait=205.48ms
m-3 https://symbolication.services.mozilla.com/symbolicate/v5
200 h2 size=116.1KB duration=705.23ms
Phases: TTFB=298.93ms DL=39.541ms wait=113.42ms

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.49%. Comparing base (4cf61c8) to head (758a0ec).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #6172 +/- ##
=======================================
Coverage 83.49% 83.49% =======================================
Files 344 344 Lines 36868 36868 Branches 10343 10334 -9 =======================================
Hits 30782 30782 Misses 5659 5659 Partials 427 427 

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[fatadel]

Thanks, LGTM!