4.x: Tracing project structure alignment

[tomas-langer]

In security, we use security/providers for extending security features and provide new forms of security.
In metrics, we have agreed to use metrics/providers for implementation of additional providers (MP metrics, Micrometer, Otel metrics)

In tracing, we should do the same thing, and move opentelemetry, opentracing, jaeger, and zipkin providers to such a directory.

This will impact:

• module maven coordinates
• module name (JPMS)
• package structure