Feat: Add Catchpoint Exporter

[BominRahmani]

PR Description

The following adds the Catchpoint Exporter in Alloy. The exporter was created with the intention of supporting the Grafana Catchpoint integration. The exporter is fairly stable, and I wouldn't expect any further changes unless users wanted more metrics.

Which issue(s) this PR fixes

Notes to the Reviewer

PR Checklist

• [x] CHANGELOG.md updated
• [x] Documentation added
• [x] Tests updated
• [x] Config converters updated

[BominRahmani]

@mattdurham @wildum @clayton-cornell Could any of you guys take another look at this?

[mattdurham]

Minor nit on go.mod but looks good. Resolve the conflict and I will merge. Thanks!

[mattdurham]

I noticed @clayton-cornell hasnt signed off so will let him give another review before merging.

[clayton-cornell]

Docs look OK now.

One other comment, @wildum suggested this should be flagged experimental was that done? If so we need to add {{< docs/shared lookup="stability/experimental.md" source="alloy" version="<ALLOY_VERSION>" >}} to the component doc

[clayton-cornell]

@mattdurham All docs questions are answered now. :-) Good to merge from docs side of things

[BominRahmani]

@mattdurham Any chance you can take a last look at this?

[clayton-cornell]

@mattdurham Merging - we have a green build pipeline and with your approval and docs approval it should be good to go.

[mattdurham]

Thanks @clayton-cornell , apologies @BominRahmani we had a holiday in USA yesterday.