Add Batch Processing CLI commands

[stellasphere]

Summary

• Makes roboflow batch a supported CLI surface for Asset Library Batch Processing: create, status, list, abort, and restart.
• Create requires one exact selection (--image-ids, --query, or --all), defaults to the product's CPU machine choice, supports stable request IDs, and returns structured --json output.
• Abort/restart require explicit --yes; local folders remain an upload-first flow so the CLI never implies the server can read a caller's filesystem.
• Adds typed low-level adapter methods and quickstart documentation.

Depends on the public API isolated in Platform stack layer 1: https://github.com/roboflow/roboflow/pull/14693. Merge and deploy that PR first.

Verification

• 34 focused adapter, CLI, and completion tests pass.
• Ruff check and format verification pass on every changed Python file.
• Broader CLI suite: 468 tests ran; Batch Processing tests pass. One unrelated existing training test attempted an unmocked production API request and failed DNS in the restricted test environment.