Update java implementation status

[jack-berg]

Did a thorough pass on the java implementation and updated current implementation status.

[codeboten]

What's the best way to review this? Should someone in the Java implementation review the status?

[MrAlias]

As a configuration SIG member I can say the syntax looks good. I'd like to have another Java SIG member give this a review for content before merging.

[jack-berg]

Will reach out to the java SIG. TBH, its a tough ask because a thorough review requires the reviewer to go through the implementation with a fine tooth comb like I needed to do to open this PR. I favor rubber stamps for this type of thing, and followup fixes if / when discovered.

[zeitlinger]

@jack-berg reviewing even though merged:

https://github.com/jack-berg/opentelemetry-configuration/blob/bed03400b549a43f70f32827448ffbb01c1b0436/schema/meta_schema_language_java.yaml#L61-L62

that is https://github.com/open-telemetry/opentelemetry-java/blob/42056f57c87b5c1b979a0e0b6b74a132b9162245/exporters/logging/src/main/java/io/opentelemetry/exporter/logging/internal/ConsoleMetricExporterComponentProvider.java#L19 - so "implemented"

[jack-berg]

Ah good catch @zeitlinger! I think I made an error merging conflicts from #362 since I called out support for specific properties while indicating that ConsoleMetricExporter itself was unsupported. Fixed in #380.