🚀 feat(memories.py): add input_key and output_key fields to MemoryFrontendNode template

The MemoryFrontendNode template now includes two new fields, input_key and output_key, which are string fields that are not required and are shown in the advanced section of the template. These fields can be used to specify the input and output keys for the memory node.

src/backend/langflow/template/frontend_node/memories.py

@@ -18,6 +18,27 @@ class MemoryFrontendNode(FrontendNode):
                 value=False,
             )
         )
+        # add input_key and output_key str fields
+        self.template.add_field(
+            TemplateField(
+                field_type="str",
+                required=False,
+                show=True,
+                name="input_key",
+                advanced=True,
+                value="",
+            )
+        )
+        self.template.add_field(
+            TemplateField(
+                field_type="str",
+                required=False,
+                show=True,
+                name="output_key",
+                advanced=True,
+                value="",
+            )
+        )
 
     @staticmethod
     def format_field(field: TemplateField, name: Optional[str] = None) -> None:
@@ -36,3 +57,8 @@ class MemoryFrontendNode(FrontendNode):
             field.required = False
             field.show = True
             field.advanced = False
+        if field.name in ["input_key", "output_key"]:
+            field.required = False
+            field.show = True
+            field.advanced = True
+            field.value = ""