Introduce a way to gracefully handle licensing issues from ingest processors

[dakrone]

Description

If we eventually have ingest processors that require higher license levels than just "basic", we should also have a way for Fleet to ship those ingest processors.

For example, if we want to ship an integration with a processor with a license level, then we could add a way for documents to skip that processor if they don't have the license level. Optionally, we may want to tag the document in some way to indicate that the processor was present, but did not execute.

[elasticsearchmachine]

Pinging @elastic/es-data-management (Team:Data Management)