Add Lowkey Vault module

[Xor-el]

What does this PR do?

Adds new module to support Lowkey Vault.

Why is it important?

This makes it possible for us to write Integration Tests for services that rely on Azure Key Vault.

Related issues

• Closes [Enhancement]: Add Lowkey Vault Test Container #1334

How to test this PR

Automated tests have been added to the project that verifies connectivity, test set/get secrets and create/download certificates.

Follow-ups

None at this time.

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[Xor-el]

Hi @HofmeisterAn sorry to bother you, but would you be able to review this when you get a chance? Appreciate it!

[HofmeisterAn]

You're not bothering me at all. Thanks for the PR and your contribution! I was just busy with work related stuff over the past few days. I know I'm behind on reviewing PRs. I'm trying to keep up with the time I have while balancing work and family commitments.

I took a look at it, and I think we need to discuss or address a few things before we can merge the PR. Mainly, we need to review the APIs that the container builder offers. Are they truly necessary to run a Lowkey Vault instance?

[Xor-el]

Hi @HofmeisterAn just letting you know that the changes requested has been done in case you missed that and review re-requested.