Support to Update Span Name in OpenTelemetry

#### Describe the feature

Currently the vertx-opentelemetry Library creates spans with names the HTTP Method names(GET,POST,etc) both for incoming and outgoing requests from the vertx application. Can we have support to override these names?
In the otel specification as well it is recommended to have support to override the spanNames, so that the client can configure/override it based on the cardinality.
[Otel Specification](https://opentelemetry.io/docs/specs/otel/trace/semantic_conventions/http/#name)

#### Use cases

This will be helpful in creating more meaningful spanNames based on the client requirements.