feat: add Helm-based install process

[tallaxes]

Description

Add and document the procedure for creating a cluster and installing Karpenter using published Helm charts.

• Add configure-values.sh script, which interrogates the cluster and generates karpenter-values.yaml based on karpenter-values-template.yaml. These values are used when installing Karpenter using Helm chart. Skaffold configuration is shifted to use this file as well.
• Add create-cluster.sh script which can be used for creating clusters compatible with Kaprenter provider
• Update readme with the procedure of creating cluster and installing Karpenter using published Helm chart and image

How was this change tested?

• make az-mkaks-user and make az-helm-install-snapshot

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

Release Note

[coveralls]

Pull Request Test Coverage Report for Build 8678237484

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 4 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.006%) to 97.725%

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Files with Coverage Reduction	New Missed Lines	%
pkg/operator/options/options_validation.go	4	91.84%

Totals
Change from base Build 8669955433:	-0.006%
Covered Lines:	35658
Relevant Lines:	36488

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💛 - Coveralls

[charliedmcb]

Haven't been able to test it yet, but overall I'm liking these changes.

I do think we should hard switch over to just workload identity with this change, which I can help with.

[charliedmcb]

minor comments/recommendations, but lgtm