refactor: move workflow package to dify_graph (#32844)

api/dify_graph/nodes/if_else/entities.py

@@ -0,0 +1,26 @@
+from typing import Literal
+
+from pydantic import BaseModel, Field
+
+from dify_graph.nodes.base import BaseNodeData
+from dify_graph.utils.condition.entities import Condition
+
+
+class IfElseNodeData(BaseNodeData):
+    """
+    If Else Node Data.
+    """
+
+    class Case(BaseModel):
+        """
+        Case entity representing a single logical condition group
+        """
+
+        case_id: str
+        logical_operator: Literal["and", "or"]
+        conditions: list[Condition]
+
+    logical_operator: Literal["and", "or"] | None = "and"
+    conditions: list[Condition] | None = Field(default=None, deprecated=True)
+
+    cases: list[Case] | None = None