Deploy and configure Kuadrant operator via Open Cluster Management

Full walkthrough on how to deploy and configure the Kuadrant operator via OCM and an example of how to configure Kuadrant to use shared Redis storage for Rate Limit policies.

Links:
* Multi-Cluster Gateway Controller on Open Cluster Management: https://www.youtube.com/watch?v=pXT6mBMk1UQ&t=4s

* Installing Kuadrant Operator via OCM doc: https://github.com/Kuadrant/multicluster-gateway-controller/blob/main/docs/how-to/kuadrant-addon-walkthrough.md

* Configuring Rate Limit Policies and using a shared Redis doc:
https://github.com/Kuadrant/multicluster-gateway-controller/blob/main/docs/how-to/ratelimiting-shared-redis.md

* Multi-Cluster Gateway Controller repo: https://github.com/Kuadrant/multicluster-gateway-controller

* Kuadrant: https://kuadrant.io/

* OCM https://open-cluster-management.io/