feat: add config download functionality

src/builders/EnvBuilder.ts

@@ -16,6 +16,14 @@ export class EnvBuilder implements IBuilder<Env> {
         this._src = v;
     }
 
+    /**
+     * Builds XML for a single environment (static method for direct use)
+     */
+    public buildEnv(env: Env): string {
+        this.src = env;
+        return this.build();
+    }
+
     build(): string {
         return this
             .open()