Add a mechanism to export/import organization entities

[xgp]

It is not currently possible to hook into how Keycloak does export and import of realms. We should add a way to export and import Organizations both from the admin UI and startup/CLI.

[xgp]

Update: This is possible via the ExportImportManager interface of the DatastoreProvider. https://www.keycloak.org/docs-api/23.0.3/javadocs/org/keycloak/storage/ExportImportManager.html

[xgp]

The goal is to provide an implementation of ExportImportManager that overrides the default by allowing organizations to be imported and exported.

• This should live insrc/main/java/io/phasetwo/service/storage/
• All organization data should live under a single key, organizations, and other objects that have relationships to organizations (e.g. Users and Identity Providers) should not be polluted with organization information.
• See https://github.com/keycloak/keycloak/blob/main/model/storage-private/src/main/java/org/keycloak/storage/datastore/DefaultExportImportManager.java for a base class (or to inherit from, if possible)

Steps:

1. define the schema for what is under the organizations key
2. create the objects (reusing if possible) in src/main/java/io/phasetwo/service/representation
3. override/implement the ExportImportManager methods
4. tests

[xgp]

We should target Keycloak 24, which should be out next week. In order to compile against the main branch of Keycloak, you'll have to compile it. Directions are here https://github.com/keycloak/keycloak/blob/main/docs/building.md Then you will need temporarily change the keycloak.version variable in this pom to 999.0.0-SNAPSHOT in order to compile against your locally built Keycloak.

We are doing this because LegacyExportImportManager is being replaced with DefaultExportImportManager.

[xgp]

• Add to a separate package. E.g. representation/export.
• Start by looking at the classes in representation for guidance.
• Use Lombok @Data annotations where possible.

[xgp]

We need to make sure the presence of the organization key does not cause standard Keycloak (i.e. without this extension) to fail. Try this first

[xgp]

completed in #205