SR OpenTelemetry with independent senders

[brunobat]

• Extract Vert.x OTLP senders from Quarkus into a new smallrye-opentelemetry-senders module with VertxGrpcSender and VertxHttpSender using public OTel SDK APIs (GrpcSender/HttpSender) instead of internal ones. The VertxHttpSender uses
  vertx.httpClientBuilder() instead of internal HttpClientBuilderImpl.
• Updated smallrye-opentelemetry-exporters to depend on the new senders module, removing duplicate sender classes and replacing internal GrpcExporter/HttpExporter wrappers with direct sender usage via toBinaryMessageWriter().
• Upgraded:
  • OTel SDK 1.49.0 → 1.60.1,
  • Instrumentation 2.15.0 → 2.26.1,
  • Vert.x 4.5.15 → 4.5.26.
  • Fixed resulting API migrations in smallrye-opentelemetry-cdi: SpanNames package move, and individual runtime metrics classes replaced with RuntimeMetrics.create().

[brunobat]

After discussing #555 with @jasondlee we agreed that it was too complex and decided to create a new Senders lib that will be much simpler to wire in both Wildfly and Quarkus.
This PR intends to address what was agreed.
Requires Vert.x 4.