Add default parameter values for page indexing

Author: pspanja

lib/Resources/config/search/common/page_indexing.yaml

@@ -1,3 +1,7 @@
+parameters:
+    netgen_ibexa_search_extra.page_indexing.configuration: []
+    netgen_ibexa_search_extra.page_indexing.enabled: false
+
 services:
     netgen.ibexa_search_extra.page_indexing.text_extractor.native:
         class: Netgen\IbexaSearchExtra\Core\Search\Common\PageIndexing\TextExtractor\NativeTextExtractor