[Maven Extension] Migrate from plexus to JSR dependency injection

[anuraaga]

We currently use plexus dependency injection, but using JSR would allow constructor injection, fitting better with our general patterns of non-null final fields, and provide an experience more consistent with standard frameworks.

https://maven.apache.org/maven-jsr330.html

[cyrille-leclerc]

I tried to use @Inject rather than Plexus but I faced limitations with @Inject. I forgot what were these limitations, I have to look at the history of commits.

[cyrille-leclerc]

For the record, I reverted from JSR-330 / SISU to Plexus on commit elastic/opentelemetry-maven-extension@39e2975 .

FYI The Maven community is interested in understanding the limitations we faced: https://lists.apache.org/thread/bqm4zpjmvhmtqxjnz5qbp2yjxk9y9472