Introduce k8s CRD/Operator for Capsules

[andersjohnsen]

This issue will be an ongoing tracking issue with regards to what is missing on the Capsule operator implementation.

• [x] Add webhook config to helm chart #111
• [x] Add validation for file mounting config #96
• [x] Figure out how to use the rig logger with the improvements from controller-runtime as the controller-runtime logger
• [x] Check for loadbalancer resource ownership in test #100
• [x] Simplify folder path for integration test #102
• [x] Add integration test for webhooks #127
• [x] Add cluster.Gateway implementation which uses CRD #91
• [x] #176
• [x] Add Capabilities API #173
• [x] Run integration tests in CI #101
• [x] Make standalone binary #134
• [x] Setup goreleaser for releases of operator #135
• [x] Make helmchart for deployment #152
• [x] Certificates are not auto-created when TLS is enabled #158
• [x] Config files are not mounted #156

[andersjohnsen]

First change is in #90.

[blacksails]

Added an issue for health probe support