Feat: add k6 version information to probes

[VikaCep]

Closes #1198

Displays the appropriate k6 version to probes, depending on several factors:

In the checks form

• If the probe is private, it will show the k6 version in the probe's response from the API (if available)
• If the probe is public, it means it supports version management. For this reason it will take the channel set in the check and fetch the current resolved version for that channel, and show that.

In the probes card/edit views

• If the probe is private, it will show the k6 version in the probe's response from the API (if available)
• If the probe is public, it will say it supports version management, but no specific version will be displayed (as it supports all of them)

[github-actions]

✅ Probe API Server Mappings Verification Passed

The probeAPIServerMappings.json file is up to date and matches the Grafana documentation. 🎉