Implements the Redfish routes for RateLimiterConfig at /redfish/v1/Managers/bmc/Oem/Google/RateLimiterConfig. This allows users to view (GET) and modify (PATCH) the rate limiter configuration, including LeakRatePerSec, BucketCapacity, Enabled, and Red (Random Early Detection) parameters. PiperOrigin-RevId: 841868803 Change-Id: Ib558999006c9eb80f1cc63183c9d582bb3b2862b