Allow package repository release to be used non-interactively

[derwei]

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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[satyampsoni]

/assign