* feat(redisotel): add WithCaller option
Allow the disabling the collection of the `code.function`, `code.filepath` and `code.lineno` tracing attributes.
When setting `WithCaller(false)` overall performance is increased as the "expensive" `runtime.Callers` and `runtime.(*Frames).Next` calls are no longer needed.
* chore(redisotel): improve docblock language
* chore(redisotel): rename `WithCaller` to `WithCallerEnabled`
---------
Co-authored-by: Nedyalko Dyakov <1547186+ndyakov@users.noreply.github.com>
