Add support for default_values field on selects

docs/api.rst

@@ -3392,6 +3392,24 @@ of :class:`enum.Enum`.
 
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+.. class:: SelectDefaultValueType
+
+    Represents the default value of a select menu.
+
+    .. versionadded:: 2.4
+
+    .. attribute:: user
+
+        The underlying type of the ID is a user.
+
+    .. attribute:: role
+
+        The underlying type of the ID is a role.
+
+    .. attribute:: channel
+
+        The underlying type of the ID is a channel or thread.
+
 
 .. _discord-api-audit-logs:
 

docs/interactions/api.rst

@@ -166,6 +166,14 @@ SelectOption
 .. autoclass:: SelectOption
     :members:
 
+SelectDefaultValue
+~~~~~~~~~~~~~~~~~~~
+
+.. attributetable:: SelectDefaultValue
+
+.. autoclass:: SelectDefaultValue
+    :members:
+
 Choice
 ~~~~~~~