Draft: Add helm charts and values for gitlab agentk and runner installs

• Configure values as per our requirements.

• Need to confirm if gitlab.epfl.ch has KAS enabled. And if yes, what url is it exposed at?

Relates to #56 .

assigned to @sabharwa

added 34 commits

• bdad4900...13225a10 - 33 commits from branch master
• 89e23d4e - Add helm charts and values for gitlab agentk and runner installs

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closed