Ogmios rate limit (#34)

* chore: adjusted handlers

* chore(proxy): updated k8s auth

* chore(proxy): added tiers config

* chore(examples): added full example using kind

* feat(proxy): added tiers watcher

* feat(proxy): adjusted metric server

* feat(proxy): added ws rate limiter

Author: paulobressan

Diff for: .gitignore

@@ -1,2 +1,7 @@
 /target
+env-crd.yaml
+fake-api
+.env*
+cert
+tiers.toml
 env-crd.yaml