Automation API Proof of Concept [DO NOT MEERGE]

[pawelprazak]

Description

A minimal PoC for Automation API aimed at sparking conversation around moving this effort forward.

Goals:

• prove it is doable and not very hard
• help to assess the scope of changes to existing SDK
• help to estimate cost of completing this feature

Non-goals:

• not a complete implementation
• not optimized for in-depth code review

Proposed next steps:

• identify complete list of required refactorings in existing SDK that are required (or useful) for Automation API
• gather community input regarding the API (esp. asynchronous API, executors, context propagation, etc.)
• gather team feedback on the implementation details required to successfully finish the Automation API

Relates to #965

Checklist

• I have added tests that prove my fix is effective or that my feature works

• I have updated the CHANGELOG-PENDING file with my change

• Yes, there are changes in this PR that warrants bumping the Pulumi Service API version

[pawelprazak]

here is the minimal example of how the API could look like :)

[t0yv0]

Hey @pawelprazak thank you for this contribution! Is there a chance to publish this from a Virtus repo so it's a standalone artifact as opposed to something checked in here? Would you need changes to the core Java SDK here to support the Automation API? Our teams are operating with very limited cycles right now to take on more maintenance (accept this contrib).