feat: add account infrastructure base for resource group creation

[MatthewLemmond]

Description

Adds a new layer for the account infrastructure base and creates the audit, observability, and security resource groups based on what is set then passes that to the subsequent layers

NOTE: due to existing resource group currently only being for the observability resource group in the account infrastructure base the input for existing resource group is removed, though we should be able to add the functionality to provide existing resource groups there

Release required?

• [ ] No release
• [ ] Patch release (x.x.X)
• [x] Minor release (x.X.x)
• [ ] Major release (X.x.x)

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[MatthewLemmond]

/run pipeline