feat:add pagination and sorting to search results

Implemented pagination and sorting functionality in the search results. Updated filter conditions, added pagination logic, introduced new config parameters, and adjusted the dataset to support these features.

orp/orp_search/config.py

@@ -5,7 +5,15 @@
 
 class SearchDocumentConfig:
     def __init__(
-        self, search_terms: str, document_types=None, timeout=None, dummy=False
+        self,
+        search_terms: str,
+        document_types=None,
+        timeout=None,
+        dummy=False,
+        limit=10,
+        offset=1,
+        publisher_terms=None,
+        sort_by=None,
     ):
         """
         Initializes a new instance of the class.
@@ -20,6 +28,10 @@ def __init__(
         self.document_types = document_types
         self.timeout = None if timeout is None else int(timeout)
         self.dummy = dummy
+        self.limit = limit
+        self.offset = offset
+        self.publisher_terms = publisher_terms
+        self.sort_by = sort_by
 
     def validate(self):
         """
@@ -35,7 +47,11 @@ def validate(self):
         bool
             True if 'searchTerms' is present and non-empty, False otherwise.
         """
-        if not self.search_terms:
-            logger.error("search terms are required")
+        if self.offset < 0:
+            logger.error("offset must be a positive integer")
+            return False
+
+        if self.limit < 0:
+            logger.error("limit must be a positive integer")
             return False
         return True