Move telemetry functionality for core in a separate file

[DimitrisJim]

Telemetry information grabs a good amount of space inside a function and can make it harder to parse, it would be nice if the functionality for it can be moved in a separate telemetry.go file so as to not get in the way of more important code.

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged/assigned

[DimitrisJim]

Can open issues for other places this can be done. Told @gjermundgaraba to open up the first PR on this to get other contributors with a template to work with.

[DimitrisJim]

Seems only other place that is relevant for this might be core/, capability just has one call to it in its BeginBlock that doesn't warrant moving.

The relevant calls that could do with moving involve the IncrCounterWithLabels, those are the ones which involve more real estate that gets in the way.