Add reprs to base classes ScalarInterpolator and VectorInterpolator

Author: VeckoTheGecko

src/parcels/interpolators/_base.py

@@ -7,8 +7,14 @@ class ScalarInterpolator(ABC):
     def interp(self, particle_positions, grid_positions, field) -> Any:  #! API a WIP
         ...
 
+    def __repr__(self):
+        return f"{self.__class__.__name__}(...)"
+
 
 class VectorInterpolator(ABC):
     @abstractmethod
     def interp(self, particle_positions, grid_positions, vectorfield) -> Any:  #! API a WIP
         ...
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}(...)"