feat(admin): add manual transition job controls

[houseme]

Related Issues

rustfs/backlog#1480
rustfs/backlog#1481

Background

RustFS manual transition durable jobs expose async run, status, wait, and cancel contracts. The CLI needs matching rc admin ilm transition controls while preserving the existing synchronous run behavior.

Solution

Add rc admin ilm transition run --async, status, wait, and cancel commands. The implementation keeps the existing synchronous request shape compatible, adds optional parsing for durable job endpoints, and maps status/cancel error classes for 403, 404, 409, and 501 responses.

Verification

• cargo fmt --all --check
• git diff --check
• cargo test -p rustfs-cli --test admin_ilm
• cargo test -p rustfs-cli test_parse_admin_ilm_transition
• cargo test -p rc-s3 manual_transition
• cargo check --workspace
• cargo test -p rustfs-cli --test output_schema_v3
• cargo clippy --workspace -- -D warnings
• cargo test --workspace

Compatibility

The existing synchronous run API remains unchanged and legacy responses without durable job fields still parse successfully.