feat(.github/interop): use markdown table

[mxinden]

1. Provide --markdown flag to QUIC Interop Runner to get markdown formatted table.
2. Ignore all log output, but table.

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Previous work: quic-interop/quic-interop-runner#372

[github-actions]

Benchmark results

• coalesce_acked_from_zero 1+1 entries
  time: [255.43 ns 255.96 ns 256.54 ns]
  change: [+1.6079% +2.0085% +2.3593%] (p = 0.00 < 0.05)
  💔 Performance has regressed.

• coalesce_acked_from_zero 3+1 entries
  time: [290.39 ns 291.07 ns 291.82 ns]
  change: [+1.2481% +1.6468% +2.1096%] (p = 0.00 < 0.05)
  💔 Performance has regressed.

• coalesce_acked_from_zero 10+1 entries
  time: [289.34 ns 289.84 ns 290.50 ns]
  change: [+0.8115% +1.3988% +1.8870%] (p = 0.00 < 0.05)
  Change within noise threshold.

• coalesce_acked_from_zero 1000+1 entries
  time: [267.43 ns 267.58 ns 267.75 ns]
  change: [+2.7303% +3.3853% +4.0226%] (p = 0.00 < 0.05)
  💔 Performance has regressed.

• RxStreamOrderer::inbound_frame()
  time: [127.89 ms 127.94 ms 128.00 ms]
  change: [+4.7731% +4.8470% +4.9193%] (p = 0.00 < 0.05)
  💔 Performance has regressed.

• Run multiple transfers with varying seeds
  time: [188.96 ms 189.59 ms 190.21 ms]
  change: [-6.3790% -5.9374% -5.5154%] (p = 0.00 < 0.05)
  💚 Performance has improved.

• Run multiple transfers with the same seed
  time: [190.31 ms 190.68 ms 191.04 ms]
  change: [-4.8792% -4.6348% -4.3731%] (p = 0.00 < 0.05)
  💚 Performance has improved.

⬇️ Download logs

[martinthomson]

Why not just grep '^\|:--' quic-interop-runner/summary >> comment ?

[mxinden]

👍 created a follow-up @martinthomson #1747.