adding release notes

doc/release-notes/11027-extend-datasets-files-from-search-api.md

@@ -0,0 +1,19 @@
+### Feature to extend Search API for SPA
+
+Added new fields to search results type=files
+
+For Files:
+- restricted: boolean
+- canDownloadFile: boolean ( from file user permission)
+- categories: array of string "categories" would be similar to what it is in metadata api.
+For tabular files:
+- variables: number/int shows how many variables we have for the tabular file
+- observations: number/int shows how many observations for the tabular file
+
+
+
+New fields added to solr schema.xml:
+<field name="fileRestricted" type="boolean" stored="true" indexed="false" multiValued="false"/>
+<field name="fileDownloadable" type="boolean" stored="true" indexed="false" multiValued="false"/>
+
+See https://github.com/IQSS/dataverse/issues/11027