Kibana app: Migrate saved object mappings and migration scripts

[flash1293]

A lot of the saved object types maintained by the Kibana app team are still defined in the legacy platform. These should be migrated to the new core api https://github.com/elastic/kibana/blob/master/docs/development/core/server/kibana-plugin-core-server.savedobjectsservicesetup.registertype.md

Definitions to migrate (always lists saved object type, current location and target plugin):

• dashboard (src/legacy/core_plugins/kibana/mappings.json / src/legacy/core_plugins/kibana/migrations/migrations.js) 👉dashboard [NP] Migrate saved object mappings and migration scripts for Dashboard #63864
• url (currently in src/legacy/core_plugins/kibana/mappings.json) 👉share Migrate url saved object type url registration kibana platform #64043
• kql-telemetry (currently in src/legacy/core_plugins/kibana/mappings.json) 👉data Migrate kql_telemetry saved object registration to Kibana platform #64149
• sample-data-telemetry (currently in src/legacy/core_plugins/kibana/mappings.json) 👉home PR Migrate sample-data-telemetry saved object registration to Kibana platform #63965
• graph-workspace (currently in x-pack/legacy/plugins/graph/mappings.json / x-pack/legacy/plugins/graph/migrations.js) 👉Migrate graph_workspace saved object registration to Kibana platform #64157
• lens Move Lens saved object setup to Kibana platform #61157

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[kertal]

all done and therefore closed