feat(caddy): move routes into site.caddy

caddy/Caddyfile.example

@@ -12,10 +12,8 @@
 	}
 }
 
-<DOMAIN> {
-	reverse_proxy beavergram-api:8080
+(compress) {
+	encode zstd gzip
 }
 
-dev.<DOMAIN> {
-	reverse_proxy beavergram-frontend:5173
-}
+import /etc/caddy/projects.d/*.caddy