feat: Human Input Node (#32060)

The frontend and backend implementation for the human input node.

Co-authored-by: twwu <twwu@dify.ai>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: yyh <92089059+lyzno1@users.noreply.github.com>
Co-authored-by: zhsama <torvalds@linux.do>

api/controllers/console/__init__.py

@@ -37,6 +37,7 @@ from . import (
     apikey,
     extension,
     feature,
+    human_input_form,
     init_validate,
     ping,
     setup,
@@ -171,6 +172,7 @@ __all__ = [
     "forgot_password",
     "generator",
     "hit_testing",
+    "human_input_form",
     "init_validate",
     "installed_app",
     "load_balancing_config",