Rewrote the Kubernetes YAML - Split out deployments/services and some more

[VictorRobellini]

I still need to update the readme, but some of the changes I've made:

1. Script for making secrets. Execute it and it will write your keys to a file for future reference.
2. Moved env vars to a common configmap for all services
3. Updated the Prowlarr image to use linuxserver.io image
4. Exposed Prowlarr so I can access the interface
5. Set up storage for Prowlarr so it doesn't need to reinit on every start
6. Fixed the missing SECRET_KEY to the deployments that need them.

Since I have MetalLB, MongoDB and SSL termination setup in my environment, I just split things out.

MediaFusion
https://github.com/VictorRobellini/stremio-addons-k8s/tree/main/mediafusion

How to set up lightweight Kubernetes and MetalLB for your homelab:
https://github.com/VictorRobellini/stremio-addons-k8s/

I still can't get MediaFusion to work properly, I've spent most of my time documenting the setup and deployments.