Changes in embedding.py, phrase.py, symbol.py, word.py

Added __get_pydantic_core_schema for serialisation to every class

anansyTypes/structures/symbol.py

@@ -1,12 +1,29 @@
 from dataclasses import dataclass
-from typing import Optional
+from typing import Any
 import numpy as np
 from pydantic_tensor import Tensor
 from typing import Any, Literal
-import torch
+from pydantic_core import core_schema
+
+
 @dataclass
 class Symbol:
     id: int
     label: str
-    image: Tensor[ np.ndarray[Any, Any],tuple, Literal["int32", "int64"]]
+    image: Tensor[np.ndarray[Any, Any], tuple, Literal["int32", "int64"]]
 
+    @classmethod
+    def __get_pydantic_core_schema__(cls, source_type: Any, handler):
+        def serialize(value: "Symbol") -> dict:
+            serialized_image = handler(
+                source_type=value.image.__class__, value=value.image
+            )
+
+            return {"id": value.id, "label": value.label, "image": serialized_image}
+
+        return core_schema.json_or_python_schema(
+            python_schema=handler(cls),
+            json_schema=core_schema.plain_serializer_function_ser_schema(
+                serialize, return_type=dict, when_used="json"
+            ),
+        )