docs: allow @mixes TSDoc tag for documenting mixins (#10545)

packages/builders/src/interactions/commands/chatInput/ChatInputCommand.ts

@@ -9,6 +9,11 @@ import { SharedChatInputCommandSubcommands } from './mixins/SharedSubcommands.js
 
 /**
  * A builder that creates API-compatible JSON data for chat input commands.
+ *
+ * @mixes CommandBuilder<RESTPostAPIChatInputApplicationCommandsJSONBody>
+ * @mixes SharedChatInputCommandOptions
+ * @mixes SharedNameAndDescription
+ * @mixes SharedChatInputCommandSubcommands
  */
 export class ChatInputCommandBuilder extends Mixin(
 	CommandBuilder<RESTPostAPIChatInputApplicationCommandsJSONBody>,

packages/builders/tsdoc.json

@@ -0,0 +1,9 @@
+{
+	"$schema": "https://developer.microsoft.com/json-schemas/tsdoc/v0/tsdoc.schema.json",
+	"tagDefinitions": [
+		{
+			"tagName": "@mixes",
+			"syntaxKind": "block"
+		}
+	]
+}