feat(devops): Add model tag feature_flag to ticket linked item

ref: #662 #659

.github/ISSUE_TEMPLATE/new_model.md

@@ -35,7 +35,9 @@ Describe in detail the following:
 
 - [ ] 🏷️ Model tag added to `app/core/lib/slash_commands/linked_model.CommandLinkedModel.get_model()` function
 
-    - [ ] Tag updated in the [docs](https://nofusscomputing.com/projects/centurion_erp/user/core/markdown/#model-reference)
+    - [ ] 📘 Tag updated in the [docs](https://nofusscomputing.com/projects/centurion_erp/user/core/markdown/#model-reference)
+    - [ ] tag added to `app/core/models/ticket/ticket_linked_items.TicketLinkedItem.__str__()`
+    - [ ] tag added to `app/core/lib/slash_commands/linked_model.CommandLinkedModel.get_model()`
     - [ ] ⚒️ Migration _Ticket Linked Item item_type choices update_
 
 >[!note]

app/core/models/ticket/ticket_linked_items.py

@@ -147,6 +147,11 @@ class TicketLinkedItem(TenancyObject):
 
             item_type = 'team'
 
+        else:
+
+            item_type = str(self.get_item_type_display()).lower().replace(' ', '_')
+
+
         if item_type:
 
             return f'${item_type}-{int(self.item)}'

app/core/serializers/ticket_linked_item.py

@@ -190,6 +190,14 @@ class TicketLinkedItemViewSerializer(TicketLinkedItemModelSerializer):
 
             model = Device
 
+        elif item.item_type == TicketLinkedItem.Modules.FEATURE_FLAG:
+
+            from devops.serializers.feature_flag import FeatureFlag, BaseSerializer
+
+            base_serializer = BaseSerializer
+
+            model = FeatureFlag
+
         elif item.item_type == TicketLinkedItem.Modules.KB:
 
             from assistance.serializers.knowledge_base import KnowledgeBase, KnowledgeBaseBaseSerializer