feat: Add MultipleOutputsComponent to CustomComponent

This commit adds the `MultipleOutputsComponent` class to the `CustomComponent` module. The `MultipleOutputsComponent` class defines multiple inputs and outputs for the component. The `inputs` field includes an input for a string and an input for a number. The `outputs` field includes an output for a certain output and an output for another output. This change enhances the functionality and flexibility of the `CustomComponent` module.

tests/data/component_multiple_outputs.py

@@ -0,0 +1,19 @@
+from langflow.custom import CustomComponent
+from langflow.template.field.base import Input, Output
+
+
+class MultipleOutputsComponent(CustomComponent):
+    inputs = [
+        Input(display_name="Input", name="input", field_type=str),
+        Input(display_name="Number", name="number", field_type=int),
+    ]
+    outputs = [
+        Output(display_name="Certain Output", method="certain_output", name="certain_output"),
+        Output(name="Other Output", method="other_output"),
+    ]
+
+    def certain_output(self) -> str:
+        return f"This is my string input: {self.input}"
+
+    def other_output(self) -> int:
+        return f"This is my int input multiplied by 2: {self.number * 2}"