docs: Add docs for Microcks deployment on OVHcloud MKS

[scraly]

Description

This PR introduces a comprehensive guide for deploying Microcks on OVHcloud Managed Kubernetes Service (MKS). It includes the necessary steps for setting up the infrastructure, deploying services such as Keycloak for authentication and MongoDB for storage, and configuring these components to work together.

This guide also show how to deploy Microcks with a Gateway API (envoy) instead of retired ingress nginx.

Related issue(s)

fixes #32

[github-actions]

👋 @scraly

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[lbroudoux]

Awesome! 🎉 This looks great! Thabks a lot for the contrib @scraly 👏

[github-actions]

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