add special lexis getter

server/api/routes/project/items.py

 from fastapi import APIRouter, Depends, HTTPException, status, Query
-from nacsos_data.db.schemas import Project, ItemTypeLiteral, GenericItem, AcademicItem, ItemType, Item, LexisNexisItem
+from nacsos_data.db.crud.items.lexis_nexis import read_lexis_paged_for_project
+from nacsos_data.db.schemas import Project, ItemTypeLiteral, GenericItem, AcademicItem, ItemType, Item, LexisNexisItem, \
+    LexisNexisItemSource
 
 from nacsos_data.models.items import AnyItemModel, GenericItemModel, AcademicItemModel, AnyItemModelList, \
     LexisNexisItemModel
@@ -14,7 +16,7 @@ from nacsos_data.db.crud.items.twitter import \
     read_all_twitter_items_for_project_paged, \
     read_twitter_item_by_item_id, \
     import_tweet
-from sqlalchemy import select
+from sqlalchemy import select, func
 
 from server.api.errors import ItemNotFoundError
 from server.data import db_engine
@@ -59,9 +61,8 @@ async def list_project_data_paged(item_type: ItemTypeLiteral, page: int, page_si
                                             page=page, page_size=page_size,
                                             project_id=project_id, engine=db_engine)
     if item_type == 'lexis':
-        return await read_paged_for_project(Model=LexisNexisItemModel, Schema=LexisNexisItem,
-                                            page=page, page_size=page_size,
-                                            project_id=project_id, engine=db_engine)
+        return await read_lexis_paged_for_project(page=page, page_size=page_size,
+                                                  project_id=project_id, db_engine=db_engine)
     if item_type == 'twitter':
         return await read_all_twitter_items_for_project_paged(project_id=project_id,
                                                               page=page, page_size=page_size, engine=db_engine)