Migrate to oa-configurator 1.0

[nicoloesch]

Depends on: orm-loader, must merge and publish first. Bumps pyproject.toml's oa-configurator pin (two locations: main deps, dev extra) once the new version is out. # TODO markers already in the diff.out.

Summary

• Migrate OmopAlchemyConfig onto RefTo(DatabaseConfig): cdm_db/test_cdm_db fields replace CDM_DB/TEST_DB ResourceSpec objects and owned_resources/required_resources/test_resources.
  • test_cdm_db carries RefTo(DatabaseConfig, is_test=True)
  • the old, disconnected TEST_DB ClassVar is removed entirely due to redundancy
• get_cdm_context()/create_cdm_engine()
  • resolver.resolve_resource() → resolve_database();
  • resolved.database.url → resolved.connection.url (the renamed attribute on ResolvedDatabase).
• maintenance/cli_schema_info.py
  • same resolve_resource → resolve_database fix
  • now resolves the database name via the package config instead of a hardcoded CDM_DB.semantic_name.
• tests/conftest.py
  • resolve_test_resource(OmopAlchemyConfig.TEST_DB) → resolve_test_database(OmopAlchemyConfig, "test_cdm_db")
  • removed pg_session check for test databases as that is now in oa-configurator
• Fixed 5 test files still constructing StackConfig with the old databases=/resources= shape (DatabaseConfig-as-raw-connection, ResourceConfig)
• connections=/databases= with ConnectionConfig/DatabaseConfig for all test files

Relationship to open PRs and issues

• Absorbs Widen oa-configurator and orm-loader pins to semver ranges #40
  • Fixes Relax oa-configurator / orm-loader pins to semver ranges #39

[gkennos]

don't deploy this before a PR for #45 has been merged as well