Rate Limit Headers

It enables RateLimit Header Fields for HTTP as specified in Rate Limit Headers Draft

apiVersion: limitador.kuadrant.io/v1alpha1
kind: Limitador
metadata:
  name: limitador-sample
spec:
  rateLimitHeaders: DRAFT_VERSION_03

Current valid values are:

DRAFT_VERSION_03 (ref: https://datatracker.ietf.org/doc/id/draft-polli-ratelimit-headers-03.html)
NONE

By default, when spec.rateLimitHeaders is null, --rate-limit-headers command line arg is not included in the limitador's deployment.