Add validation and serialization aliases to sqlmodel

In the main sqlmodel, validation_alias and serialization_alias have been added as optional attributes. These aliases would provide more flexibility in handling and managing data validation and serialization respectively.

Author: evotodi

sqlmodel/main.py

@@ -201,6 +201,8 @@ def Field(
     *,
     default_factory: Optional[NoArgAnyCallable] = None,
     alias: Optional[str] = None,
+    validation_alias: Optional[str] = None,
+    serialization_alias: Optional[str] = None,
     title: Optional[str] = None,
     description: Optional[str] = None,
     exclude: Union[
@@ -244,6 +246,8 @@ def Field(
     *,
     default_factory: Optional[NoArgAnyCallable] = None,
     alias: Optional[str] = None,
+    validation_alias: Optional[str] = None,
+    serialization_alias: Optional[str] = None,
     title: Optional[str] = None,
     description: Optional[str] = None,
     exclude: Union[