feat: Add ComponentFrontendNode to CustomComponent

This commit adds the `ComponentFrontendNode` class to the `CustomComponent` module. The `ComponentFrontendNode` class defines a new frontend node for the `Component` type. It includes a template with a code input field. This change enhances the functionality and flexibility of the `CustomComponent` module.

tests/data/component_nested_call.py

@@ -0,0 +1,20 @@
+from langflow.custom import CustomComponent
+from langflow.template.field.base import Input, Output
+from random import randint
+
+
+class MultipleOutputsComponent(CustomComponent):
+    inputs = [
+        Input(display_name="Input", name="input", field_type=str),
+        Input(display_name="Number", name="number", field_type=int),
+    ]
+    outputs = [
+        Output(name="Certain Output", method="certain_output"),
+        Output(name="Other Output", method="other_output"),
+    ]
+
+    def certain_output(self) -> int:
+        return randint(0, self.number)
+
+    def other_output(self) -> int:
+        return self.certain_output()