Feature/ocean backstage integration

[fokolo]

Description

What - A backstage integration to Port.

Why - For users who want to leave side-by-side with Port and Backstage or migrate to Port from Backstage

How - Using Backstage Entities API

Type of change

Please leave one option from the following and delete the rest:

• [x] New Integration (non-breaking change which adds a new integration)

All tests should be run against the port production environment(using a testing org).

Core testing checklist

• [x] Integration able to create all default resources from scratch
• [ ] Resync finishes successfully
• [ ] Resync able to create entities
• [ ] Resync able to update entities
• [ ] Resync able to detect and delete entities
• [ ] Scheduled resync able to abort existing resync and start a new one
• [ ] Tested with at least 2 integrations from scratch
• [ ] Tested with Kafka and Polling event listeners
• [ ] Tested deletion of entities that don't pass the selector

Integration testing checklist

• [x] Integration able to create all default resources from scratch
• [ ] Resync able to create entities
• [ ] Resync able to update entities
• [ ] Resync able to detect and delete entities
• [x] Resync finishes successfully
• [ ] If new resource kind is added or updated in the integration, add example raw data, mapping and expected result to the examples folder in the integration directory.
• [ ] If resource kind is updated, run the integration with the example data and check if the expected result is achieved
• [ ] If new resource kind is added or updated, validate that live-events for that resource are working as expected
• [ ] Docs PR link here

Preflight checklist

• [ ] Handled rate limiting
• [x] Handled pagination
• [x] Implemented the code in async
• [ ] Support Multi account

Screenshots

Include screenshots from your environment showing how the resources of the integration will look.

API Documentation

Provide links to the API documentation used for this integration.