create rsky-pdsadmin

[afbase]

Summary

creates a rust equivalent pdsadmin tool. it has all the equivalent features as the bluesky one and also incorporates one command to initialize an rsky-pds with diesel. it is also extensible.

Changes

• Feature implementation
• Bug fix
• Documentation update
• Other (please specify):

Checklist

• I have tested this with an rsky-pds
• I confirm that my implementation aligns with the canonical Typescript implementation and/or atproto spec
• I have updated relevant documentation.
• I have formatted my code correctly
• I have provided examples for how this code works or will be used. see .env file

[afbase]

review #111 first

[rudyfraser]

@afbase can you resolve the conflicts for this?

[rudyfraser]

FYI @afbase https://github.com/blacksky-algorithms/rsky/actions/runs/15192125101