feat(post-scan action): Create terraform version for the aws-slack-plugin

[felipecosta09]

Terraform version for the aws-slack-plugin

Change Summary

Add terraform template to deploy the plugin

PR Checklist

• [X] 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

[felipecosta09]

Thanks a lot, @davidblanchard123 for the reviews and suggestions! Always very helpful. 🥇

[trend-kwan-su]

LGTM. Please squash the commits.

[felipecosta09]

LGTM. Please squash the commits.

Hi @kwan-su There is an automated squash option in the PR, please refer to the Issue 94

[trend-kwan-su]

@felipecosta09 Reviewed. Please test the template after the code changes, thanks!

[trend-kwan-su]

@felipecosta09 Please check all the naming of variables are correct and let me know if the template is tested then we can approve this PR to merge.

[JimLin94]

@felipecosta09 Seem like there are variable declaration issues.

[felipecosta09]

@felipecosta09 Seem like there are variable declaration issues.

That should be fixed @JimLin94