Implement a more robust Config (#60)

* Implement a more robust Config

This moves the configuration variables from the `.env` file to a new `bewcloud.config.ts` file. Note that DB connection and secrets are still in the `.env` file.

This will allow for more reliable and easier personalized configurations, and was a requirement to start working on adding SSO (#13).

For now, `.env`-based config will still be allowed and respected (overriden by `bewcloud.config.ts`), but in the future I'll probably remove it (some major upgrade).

* Update deploy script to also copy the new config file

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   website:
-    image: ghcr.io/bewcloud/bewcloud:main
+    image: ghcr.io/bewcloud/bewcloud:main # alternatively, you can use a specific version/tag, for greater stability
     restart: always
     ports:
       - 127.0.0.1:8000:8000