feat: resolve project-id and org-id using instance-id

[LucDeCaf]

Replaces #37 using a cleaner and (hopefully) simpler approach.

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Using a soon-to-be-introduced path in @powersync/management-client, automatically fetch the project_id and org_id flags when given the instance_id for a number of commands (where it makes sense to do so).

Example

Before:

powersync pull instance --project-id='project-123-456-789' --instance-id='instance-123-456-789'

After:

# Project ID is fetched from the management service if required
powersync pull instance --instance-id='instance-123-456-789'

NB: Test failures are expected until the next version of the @powersync/management-client releases.