fix: allow overriding of stackoverflow configuration

Make it possible to override the config when instantiating for more flexibility.

Signed-off-by: Scott Guymer <scott.guymer@philips.com>

.changeset/olive-eyes-sing.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-stack-overflow-backend': minor
+---
+
+Enable configuration override for StackOverflow backend plugin when instantiating the search indexer. This makes it possible to set different configuration for frontend and backend of the plugin.

plugins/stack-overflow-backend/src/search/StackOverflowQuestionsCollatorFactory.ts

@@ -95,11 +95,11 @@ export class StackOverflowQuestionsCollatorFactory
       'https://api.stackexchange.com/2.2';
     const maxPage = options.maxPage || 100;
     return new StackOverflowQuestionsCollatorFactory({
-      ...options,
       baseUrl,
       maxPage,
       apiKey,
       apiAccessToken,
+      ...options,
     });
   }