Move oss telemetry service into NP

[flash1293]

This PR moves the shimmed oss telemetry service into the new platform.

Task manager usage: It removes the kbnServer.afterPluginsInit wrapper around task manager invocations. Are those still necessary with everything in the new platform?

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[kertal]

#56119

[flash1293]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 937c431

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@elasticmachine merge upstream

[Bamieh]

LGTM. My only concern is having usageCollection as required plugin. if it was disabled will kibana fail to start until ossTelmetry is disabled as well? or will it autmatically get disabled? My recommendation in the usageCollection readme is to have it as optional across all plugins but that depends on how NP deals with disabled required plugins.

Something to note that currently there is no way to disable usageCollection but we might change that in the future, hence the optional requirement recommended.

[flash1293]

The new platform will automatically disable it as well - I think the required dependency makes sense here because ossTelemetry can't provide any functionality without usageCollection.