chore: add new maintainer

.github/CODEOWNERS

@@ -6,4 +6,4 @@
 # @youngjuning will be requested for review when someone opens a pull request.
 *       @youngjuning
 
-/vscode.d.ts       @youngjuning @gepingli @Saber2pr @Imchenlong @pan463859 @Tecvan-fe @sherry-zxy
+/vscode.d.ts       @youngjuning @gepingli @Saber2pr @Imchenlong @pan463859 @Tecvan-fe @sherry-zxy @liuqh0609

README.md

@@ -40,7 +40,7 @@ API 列表使用 Typedoc 从 [vscode.d.ts](https://github.com/youngjuning/vscode
 - [x] languages         @Tecvan-fe
 - [x] notebooks         @sherry-zxy
 - [x] scm               @sherry-zxy
-- [ ] tasks
+- [x] tasks             @liuqh0609
 - [x] tests             @pan463859
 - [x] window            @youngjuning
 - [x] workspace         @gepingli

vscode.d.ts

@@ -6925,6 +6925,7 @@ export interface TaskFilter {
 
 /**
  * Namespace for tasks functionality.
+ * @maintainer {@link https://github.com/liuqh0609 @liuqh0609}
  */
 export namespace tasks {