WIP - Add to C4 Exemption Type

[baonguyenNava]

Ticket

Resolves #{TICKET NUMBER OR URL}

Changes

Adds draft proposal for review and future implementation.

Context for reviewers

Testing instructions, background context, more in-depth details of the implementation, and anything else you'd like to call out or ask reviewers.

Testing

Provide evidence that the code works as expected. Explain what was done for testing and the results of the test plan. Include screenshots, GIF demos, shell commands or output to help show the changes working as expected. ProTip: you can drag and drop or paste images into this textbox.

Preview environment for reporting-app

• Service endpoint: https://p-194-reporting-app-dev-1357774754.us-east-1.elb.amazonaws.com
• Deployed commit: e402467

[nkutub]

@baonguyenNava , can you rename the readme file to be exemption_screener.md. we decided that too many readme's will confuse LLM readers and leaves more room for error.