Allow package repository release to be used non-interactively

**Describe the problem/challenge you have**
I would like to use `kctrl package repository release` in my CI system. It would be easier if this command was able to be used non-interactively.

**Describe the solution you'd like**
I'd like to be able to pass flags for the two pieces of information that gets prompted for:
1. Package Repository Name -> --name, -n
2. Registry URL -> --registry-url, -u

I'm not set on the above flags, feel free to change to anything that might work better.

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Locate the implementation and tests for the `kctrl package repository release` command, then inspect how its two current prompts collect the package repository name and registry URL. Add non-interactive inputs for both values and verify that CI usage completes without prompts while existing interactive behavior remains covered.

Written by the indexing model from the issue text.