* Use directory name as project name for libs (#115720)
The libs projects are configured to all begin with `elasticsearch-`.
While this is desireable for the artifacts to contain this consistent
prefix, it means the project names don't match up with their
directories. Additionally, it creates complexities for subproject naming
that must be manually adjusted.
This commit adjusts the project names for those under libs to be their
directory names. The resulting artifacts for these libs are kept the
same, all beginning with `elasticsearch-`.
* fixes
* [logstash bridge]: stableapi bootstrap
Adds a new `logstash-bridge` project in `/libs` that exports api-stable
wrappers for the elasticsearch-internal types that Logstash's Elastic
Integration Filter relies on to provide ingest pipeline execution inside
of Logstash.
These bridge classes prevent Elasticsearch-internal refactorings from
breaking the Logstash-owned project.
* Update docs/changelog/108171.yaml
* rename StableAPI -> StableBridgeAPI
