[GraphQL/MovePackage] Query for latest version

[amnn]

Description

Add a new kind of package point look-up to get the latest version of the package at a given ID (or from another MovePackage). For system packages, this is analogous to getting the latest version of the object at that ID, but the versions of other packages all exist at different IDs.

Test plan

New transactional tests:

sui$ cargo nextest run -p sui-graphql-e2e-tests \
  --features pg_integration                     \
  -- packages/versioning

Stack

• #17686
• #17687
• #17688
• #17689
• #17691
• #17694
• #17695
• #17542
• #17726
• #17543
• #17692

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Release notes

Check each box that your changes affect. If none of the boxes relate to your changes, release notes aren't required.

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• [ ] Protocol:
• [ ] Nodes (Validators and Full nodes):
• [ ] Indexer:
• [ ] JSON-RPC:
• [x] GraphQL: Add Query.latestPackage and MovePackage.latest for fetching the latest version of a package.
• [ ] CLI:
• [ ] Rust SDK:

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