Support macOS for deployments

[iMicknl]

This issue is for a:

- [ ] bug report -> please search issues before submitting
- [x] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

AzureRM doesn't support macOS.

Expected/desired behavior

MacOS platform supported as option for deployments, which can be achieved by:

• Rewrite Powershell script to use Az module instead of AzureRM module.
• Add a Bash deployment option uzing AZ-CLI.

[iMicknl]

Could be solved temporarily by adding Enable-AzureRmAlias (session only) to the script.
Migrate Azure PowerShell from AzureRM to Az

[iMicknl]

Fixed in #14.