feat: remove cloudfront distribution and custom alternate domain from backend

[botanical]

Issue

https://github.com/NASA-IMPACT/veda-backend/issues/403 https://github.com/NASA-IMPACT/veda-backend/issues/221

What + Why

• Remove cloudfront distribution CDK from veda-backend because it's now managed in veda-routes
• Update values passed into ingestor config to derive endpoint values using the custom host and stac and raster API root paths
• Remove configuration and support for hosting duplicate stac and raster apis as alternative domains.

Testing?

Deployed to UAH

[botanical]

Going to hold off on merging this until after next release