feat: extract watcher sidecar to deployment

[Demonsthere]

Related Issue or Design Document

• Fixes https://github.com/ory/k8s/issues/476
• Fixes bug where the probes were using port name instead of number, which caused an type conversion error
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  Further comments

[aeneasr]

Please do not merge without approval from @tricky42

[tricky42]

This would just be a workaround. According to the Kubernetes documentation Pods will be restarted if one container fails. But this didnt happen and we need to understand why. Maybe use port numbers instead of names will fix this as well.