Improve local development for workspaces

Description

Fix blocking SSH connections (!9 - merged) introduces some convenience scripts in the MR description that allow to build and release a new helm chart onto your local k8s cluster. This is helpful for local development. We would like to adapt those scripts as part of this repo's workflow.

Acceptance Criteria

• Have a script that builds the current code changes and releases a new chart onto the local k8s cluster as a makefile target
• Have a script that reverts to the original release as a makefile target
• Have a script as a make target that will clean old dev images to prevent accumulating storage
• Add documentation highlighting the above local development support tooling