chore(outputs.event_hubs): Switch to maintained library

[srebhan]

Summary

This PR switches the Azure Event Hubs output to the upstream, maintained library. Furthermore, it also uses the Azure Event Hubs emulator container for a first rudimentary integration test. This will allow us to better test the plugin in the long run.

For running the emulator, its EULA has to be accepted. In order to not force every developer into the EULA, the integration test required setting the environment variable AZURE_EVENT_HUBS_EMULATOR_ACCEPT_EULA to yes. This variable is set on CircleCI to actually run the test.

Checklist

• No AI generated code was used in this PR

Related issues

resolves #15941
resolves #14162

[telegraf-tiger]

Download PR build artifacts for linux_amd64.tar.gz, darwin_arm64.tar.gz, and windows_amd64.zip.
Downloads for additional architectures and packages are available below.

⚠️ This pull request increases the Telegraf binary size by 1.40 % for linux amd64 (new size: 288.0 MB, nightly size 284.0 MB)

📦 Click here to get additional PR build artifacts

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