feat(core): pass through builder options to custom rollup config

Just as the default rollup config is a function of builder options, so too should-be/could-be userland rollup configuration

Pass in full options to userland rollup config function

packages/web/src/builders/package/package.impl.ts

@@ -244,7 +244,7 @@ export function createRollupOptions(
     };
 
     return options.rollupConfig
-      ? require(options.rollupConfig)(rollupConfig)
+      ? require(options.rollupConfig)(rollupConfig, options)
       : rollupConfig;
   });
 }