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/models/base.py

@@ -1,4 +1,5 @@
 from datetime import datetime
+from uuid import uuid4
 
 from sqlalchemy import DateTime, func
 from sqlalchemy.orm import DeclarativeBase, Mapped, MappedAsDataclass, mapped_column
@@ -41,7 +42,7 @@ class DefaultFieldsMixin:
     )
 
     updated_at: Mapped[datetime] = mapped_column(
-        __name_pos=DateTime,
+        DateTime,
         nullable=False,
         default=naive_utc_now,
         server_default=func.current_timestamp(),
@@ -50,3 +51,16 @@ class DefaultFieldsMixin:
 
     def __repr__(self) -> str:
         return f"<{self.__class__.__name__}(id={self.id})>"
+
+
+def gen_uuidv4_string() -> str:
+    """gen_uuidv4_string generate a UUIDv4 string.
+
+    NOTE: This function exists only for historical reasons. New models should use uuidv7 for primary key generation.
+    """
+    return str(uuid4())
+
+
+def gen_uuidv7_string() -> str:
+    """gen_uuidv4_string generate a UUIDv4 string."""
+    return str(uuidv7())