feat: Allow JSONata based transformations in JSON serializer

[srebhan]

• Updated associated README.md.
• Wrote appropriate unit tests.
• Pull request title or commits are in conventional commit format

replaces #11205

This PR adds a new json_transformation option to the JSON serializer. This new option can be used to transform the JSON output using the JSONata language to accommodate for requirements on the receiver side. Additional benefits are the various filtering and processing capabilities of the introduced language (see README for a few basic examples).

[reimda]

This looks very useful. It seems like JSONata is just what the serializer needed.

[srebhan]

@reimda so you approve it? :-D

[sspaink]

This looks really useful! two minor comments, but I think it looks good.

[telegraf-tiger]

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amd64.deb	aarch64.rpm	darwin_amd64.tar.gz	windows_amd64.zip
arm64.deb	armel.rpm	darwin_arm64.tar.gz	windows_i386.zip
armel.deb	armv6hl.rpm	freebsd_amd64.tar.gz
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
		static_linux_amd64.tar.gz