[Feature Request] Enable Cors.

[youbenuse]

I'm facing CORS issue from API_ENDPOINT_URL/metadata endpoint to use FHIR_UI application.
I already updated Cognito Callback url according to the update flow but still facing issue.
Due to CORS enable guide, fhir-works-on-aws-deployment repo has cors-enable branch but this branch is a lot of commit behind from mainline branch.
So I add cors:true for all lambda functions in the serverlss.yaml file, but still facing CORS issue...

And I also deployed FHIR server using CDK before, but I didn't found a solution to enable cors issue by CDK.
Because I need to deploy implementationGuides for my customize.

Please help me how can I enable CORS by CDK in mainline branch.

Thanks