Handle new fulltext search provider configuration format

Author: manisandro

src/config_generator/map_viewer_config.py

@@ -418,9 +418,12 @@ def theme_item(self, cfg_item, themes_config, assets_dir, autogenExternalLayers,
         for search_provider in search_providers:
             if (
                 'provider' in search_provider
-                and search_provider.get('provider') == 'solr'
+                and (
+                    search_provider.get('provider') == 'solr' or
+                    search_provider.get('provider') == 'fulltext'
+                )
             ):
-                search_layers = search_provider.get('layers', {})
+                search_layers = search_provider.get('params', {}).get('layers', search_provider.get('layers', {}))
                 break
 
         # collect layers