feat: Add account scanner terraform deployment

[felipecosta09]

Add account scanner terraform deployment

Change Summary

Add account scanner terraform deployment and updates to the README.

PR Checklist

• [ ] I've read and followed the Contributing Guide.
• Documents/Readmes
  • [X] Updated accordingly
  • [ ] Not required
• Plugins that have versioning
  • [ ] Version bumped and follows Semantic Versioning
  • [X] Not required

[trend-jack-c-tang]

Hi @trend-eric-pj-wang , please help review the PR. Thanks.

[felipecosta09]

all done @trend-eric-pj-wang! Thanks for the suggestions!

[trend-eric-pj-wang]

@jack-c-tang The code LGTM. Confirm that these tf scripts could be used to create/ update account scanner stack and remove account scanner stack.

@felipecosta09 Thank you for contributing. If there isn't any concern from @jack-c-tang, we will merge it.

[felipecosta09]

Reviewed. Please insert a changeline in the end of each file.

Done!