Description:

Add support for global rate limiting.

• Create a design doc for the user-facing API. Ratelimiting Design #706
• Update IRs. Maybe we should initially focus on the xds IR and require the global rate limiting infra to be pre-provisioned? Global RateLimit Xds translation #726
• Update the Kube provider to reconcile the global rate limiting Custom Resource. Add RateLimitFilter support in k8s provider #908
• Update the resource translator to translate the global rate limiting Custom Resource into IRs. RateLimitFilter: Gateway API to Xds IR translaton #933
• If global rate limiting infra will be supported, update the Kube Infra Manager to provision global rate limiting infra. Translate RateLimitInfra into K8s resources #939
• Update the xds translator to translate the xds IR into xds APIs, e.g. type.googleapis.com/envoy.extensions.filters.http.ratelimit.v3.RateLimit. Global RateLimit Xds translation #726
• Add a user-facing doc and link into Sphinx docs, e.g. user_docs.rst. docs: add ref to global ratelimit #999