Aws multiple iam users

[AmrFawzymoh]

Link related issues:

• Resolves # (if merging this resolves the issue)
  • Creating multiple users in AWS IAM Creating multiple users in AWS IAM #35
• Progress towards # (if it's incremental progress)

Changes/added features:

• Use the 'count' feature to create multiple IAM users
• Add simple directory for the simple regular IAM user creation

The following short checklist should be used to make sure your PR is of good quality, and can be merged easily:

• follows project conventions
• follows project principles
• ./run.sh works correctly for all new examples
• CI checks pass
• mergeable to main (no conflicts)
• resolved issues linked
• Milestone linked (if applicable)

Reviewers:
@ianmiell
@ttarczynski
@sanyer
@teszes
@choilmto
@rodrigorras