OsaGateOptions

What the OSA-2026-001 gate does: the machine it buys, and the waits.

In the namespace fleet::gate. Declared in src/libs/libfleet/fleet/gate/OsaGate.hpp.

Detailed description

The gate adds three `opal:` job types to the types the coordinator sends away, buys one machine, and submits one job of each type to it. Then it puts the job types back.