feat: add slash command mentions

Author: onerandomusername

disnake/ext/commands/base_core.py

@@ -249,6 +249,11 @@ def qualified_name(self) -> str:
         """
         return self.name
 
+    @property
+    def mention(self) -> str:
+        # todo: add docs and make ID non-nullable
+        return f"</{self.qualified_name}:{self.id}>"
+
     @property
     def default_member_permissions(self) -> Optional[Permissions]:
         """Optional[:class:`.Permissions`]: The default required member permissions for this command.

disnake/ext/commands/slash_core.py

@@ -192,6 +192,12 @@ def qualified_name(self) -> str:
             return self.name
         return f"{self._parent.qualified_name} {self.name}"
 
+    @property
+    def mention(self) -> str:
+        # todo: add docs and make ID non-nullable
+        return f"</{self.qualified_name}:{self.id}>"
+
+    # todo: refactor this class to make this not optional
     @property
     def parent(self) -> Optional[InvokableSlashCommand]:
         """Optional[:class:`InvokableSlashCommand`] The parent of this SubCommandGroup.
@@ -343,6 +349,11 @@ def qualified_name(self) -> str:
             return self.name
         return f"{self._parent.qualified_name} {self.name}"
 
+    @property
+    def mention(self) -> str:
+        # todo: add docs and make ID non-nullable
+        return f"</{self.qualified_name}:{self.id}>"
+
     @property
     def parent(self) -> Optional[Union[InvokableSlashCommand, SubCommandGroup]]:
         """Optional[Union[:class:`InvokableSlashCommand`, :class:`SubCommandGroup`]]: The parent of this subcommand.