proxy: Rename RequestMonitoring to RequestContext

[cloneable]

Problem

It is called context/ctx everywhere and the Monitoring suffix needlessly confuses with proper monitoring code.

Summary of changes

• Rename RequestMonitoring to RequestContext
• Rename RequestMonitoringInner to RequestContextInner

[conradludgate]

Lol. I was told initially that the RequestContext name was confusing, so I renamed it :D 2146bcf

[github-actions]

5499 tests run: 5273 passed, 0 failed, 226 skipped (full report)

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Flaky tests (1)

Postgres 17

• test_timeline_archival_chaos: release-arm64

Code coverage* (full report)

• functions: 31.4% (7932 of 25224 functions)
• lines: 49.6% (62945 of 126930 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
6d41d7e at 2024-11-19T19:31:39.498Z :recycle:}

[cloneable]

Lol. I was told initially that the RequestContext name was confusing, so I renamed it :D 2146bcf

Oh, interesting! I think RequestContext is just right and a very common name. I have never seen RequestMonitoring for something like this, but I see the point. Both RequestInfo or RequestMetadata still seem better, though. I'll think about this a bit more.