feat: ✨ add support for "*" output types

effectively skipping type checking.
There are already trick to do the same for inputs
using `kwargs`.

There are probably implications I haven't fully thought about and
I didn't test it extensively myself

execution.py

@@ -454,7 +454,7 @@ def validate_inputs(prompt, item, validated):
             o_id = val[0]
             o_class_type = prompt[o_id]['class_type']
             r = nodes.NODE_CLASS_MAPPINGS[o_class_type].RETURN_TYPES
-            if r[val[1]] != type_input:
+            if r[val[1]] != "*" and r[val[1]] != type_input:
                 received_type = r[val[1]]
                 details = f"{x}, {received_type} != {type_input}"
                 error = {