[WIP] Add aggregated address search API endpoint

Introduced a new API endpoint `/api/1.0/main/address-reference/aggregated/search` for aggregated address reference search with support for query filtering. Extended repository with `findAggregatedBySearchString` method and updated materialized view `view_chill_main_address_reference`. Added test coverage and API specification details.

src/Bundle/ChillMainBundle/chill.api.specs.yaml

@@ -595,6 +595,25 @@ paths:
                 401:
                     description: "Unauthorized"
 
+    /1.0/main/address-reference/aggregated/search:
+        get:
+            tags:
+                - address
+            summary: Search for address reference aggregated
+            parameters:
+                - name: q
+                  in: query
+                  required: true
+                  description: The search pattern
+                  schema:
+                      type: string
+            responses:
+                200:
+                    description: "ok"
+                401:
+                    description: "Unauthorized"
+                400:
+                    description: "Bad Request"
     /1.0/main/postal-code/search.json:
         get:
             tags: