feat(parser.prometheusremotewrite): v1, atomic native histogram

[Reimirno]

Summary

Split v1/v2 metric parser version for prometheusremotewrite format, emulating that in prometheus format.

V2 is the original, existing behavior.Code is directly lifted from the original plugins/parsers/prometheusremotewrite/parser.go.

This PR implements V1, which emulates the dense behavior of prometheus format v1. It:

1. converts prom metric name to measurement name
2. uses a generic key value for value field
3. converts a prom native histogram into one single telegraf metric, instead of multiple (as in V2)

Note that prometheusremotewrite V1 DOES NOT convert classic histogram/summary into one single telegraf metric as in the case of prometheus V1, because in a remote write request, a classic histogram is already broken up into various sub-metrics (counters/gauges), and they could even be in different remote write batches. However, it does conserves the dense behavior for native histogram.

--

This PR partially inplemented the design in #16120 and partially supercedes PR #16121, as a follow up to resolve this comment and design discussion in slack channel with @srebhan.

A PR for prometheusremotewrite serializer can be found at #16494

Checklist

• No AI generated code was used in this PR

Related issues

resolves #16120

[telegraf-tiger]

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🥳 This pull request decreases the Telegraf binary size by -1.62 % for linux amd64 (new size: 284.0 MB, nightly size 288.6 MB)

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Artifact URLs

DEB	RPM	TAR GZ	ZIP
amd64.deb	aarch64.rpm	darwin_amd64.tar.gz	windows_amd64.zip
arm64.deb	armel.rpm	darwin_arm64.tar.gz	windows_arm64.zip
armel.deb	armv6hl.rpm	freebsd_amd64.tar.gz	windows_i386.zip
armhf.deb	i386.rpm	freebsd_armv7.tar.gz
i386.deb	ppc64le.rpm	freebsd_i386.tar.gz
mips.deb	riscv64.rpm	linux_amd64.tar.gz
mipsel.deb	s390x.rpm	linux_arm64.tar.gz
ppc64el.deb	x86_64.rpm	linux_armel.tar.gz
riscv64.deb		linux_armhf.tar.gz
s390x.deb		linux_i386.tar.gz
		linux_mips.tar.gz
		linux_mipsel.tar.gz
		linux_ppc64le.tar.gz
		linux_riscv64.tar.gz
		linux_s390x.tar.gz