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

fresh.config.ts

@@ -6,7 +6,7 @@ import { startCrons } from '/crons/index.ts';
 const isBuildMode = Deno.args.includes('build');
 
 if (!isBuildMode) {
-  startCrons();
+  await startCrons();
 }
 
 export default defineConfig({