Added Mocks to help aid the process of creation of the textual TUI

src/pilgrim/service/mocks/service_manager_mock.py

@@ -0,0 +1,19 @@
+from pilgrim.service.mocks.entry_service_mock import EntryServiceMock
+from pilgrim.service.mocks.photo_service_mock import PhotoServiceMock
+from pilgrim.service.mocks.travel_diary_service_mock import TravelDiaryServiceMock
+from pilgrim.service.photo_service import PhotoService
+from pilgrim.service.servicemanager import ServiceManager
+
+
+class ServiceManagerMock(ServiceManager):
+    def __init__(self):
+        super().__init__()
+
+    def get_entry_service(self):
+        return EntryServiceMock()
+
+    def get_travel_diary_service(self):
+        return TravelDiaryServiceMock()
+
+    def get_photo_service(self):
+        return PhotoServiceMock()