wip: add count connector

[rlankfo]

PR Description

Which issue(s) this PR fixes

Notes to the Reviewer

PR Checklist

• CHANGELOG.md updated
• Documentation added
• Tests updated
• Config converters updated

[ptodev]

If there is more than one such connector in the config file, I wonder if there'd be a bug due to reusing the same DefaultArguments. E.g. if one connector overrides some defaults, but another one doesn't, then would the connector which only used defaults pick up the settings from the other one? I wonder if we should copy the slices with defaults every time we call SetToDefault

[rlankfo]

I can test this out. I noticed several other components following this pattern though, I'd assume they have the same issue if this is the case.

[tpaschalis]

It's something for later on, when we're ready to merge, but let's make sure we also include a converter in the otelconvert package? We can help with that.

[github-actions]

This PR has not had any activity in the past 30 days, so the needs-attention label has been added to it.
If you do not have enough time to follow up on this PR or you think it's no longer relevant, consider closing it.
The needs-attention label signals to maintainers that something has fallen through the cracks. No action is needed by you; your PR will be kept open and you do not have to respond to this comment. The label will be removed the next time this job runs if there is new activity.
Thank you for your contributions!