feat : add deprecated decorator

Author: PierroD

fastapi_crudrouter_mongodb/core/utils/__init__.py

@@ -0,0 +1,5 @@
+from .deprecated_util import deprecated
+
+__all__ = [
+    "deprecated"
+]

fastapi_crudrouter_mongodb/core/utils/deprecated_util.py

@@ -0,0 +1,12 @@
+import warnings
+
+def deprecated(message):
+  def deprecated_decorator(func):
+      def deprecated_func(*args, **kwargs):
+          warnings.warn("{} is a deprecated function. {}".format(func.__name__, message),
+                        category=DeprecationWarning,
+                        stacklevel=2)
+          warnings.simplefilter('default', DeprecationWarning)
+          return func(*args, **kwargs)
+      return deprecated_func
+  return deprecated_decorator