feat: Callable Pipelines

(#41)
feat: Callable Pipelines

Author: AttAditya

langex/pipelines/handler.py

@@ -19,3 +19,6 @@ def __rshift__(self, other):
   def __or__(self, value):
     return self.__rshift__(value)
 
+  def __call__(self, initial_value=None):
+    return self.run(initial_value)
+