Merge quarkus-opentelemetry-exporter-otlp into quarkus-opentelemetry

[brunobat]

…as default
This can only be merged after this is released: quarkusio/quarkus#28487

Check list:

Your pull request:

• targets the development branch
• uses the 999-SNAPSHOT version of Quarkus
• has tests (mvn clean test)
• works in native (mvn clean package -Pnative)
• has integration/native tests (mvn clean verify -Pnative)
• makes sure the associated guide must not be updated
• links the guide update pull request (if needed)
• updates or creates the README.md file (with build and run instructions)
• for new quickstart, is located in the directory component-quickstart
• for new quickstart, is added to the root pom.xml and README.md

[gsmet]

Please don't check the targets the development branch if you actually targeted main. I'm cleaning up the mess and created a new PR.

[gsmet]

Commits removed from the main branch and #1194 pending.