Search management for Invenio (for Elasticsearch and OpenSearch).

Features:

• Allows Invenio modules to register indexes, aliases and index templates.
• Manages the creation and deletion of indices, aliases and templates.
• API for providing stable searches (e.g. prevents bouncing of search results).
• Maps JSONSchema URLs to Elasticsearch/OpenSearch indexes.
• Supports Elasticsearch v7 and OpenSearch v1.

Further documentation is available at https://invenio-search.readthedocs.io/.