feat(system): 添加API密钥管理功能

- 新增API密钥创建表单界面
- 实现API密钥名称输入验证
- 添加表单提交和取消功能
- 集成密钥管理弹窗组件
- 支持密钥信息的双向数据绑定
- 添加表单校验规则和错误提示
- 实现密钥创建成功后的消息通知
- 提供密钥管理模块的基础架构支持

public/tinymce/skins/ui/oxide-dark/skin.shadowdom.css

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) Tiny Technologies, Inc. All rights reserved.
+ * Licensed under the LGPL or a commercial license.
+ * For LGPL see License.txt in the project root for license information.
+ * For commercial licenses see https://www.tiny.cloud/
+ */
+body.tox-dialog__disable-scroll {
+  overflow: hidden;
+}
+.tox-fullscreen {
+  border: 0;
+  height: 100%;
+  margin: 0;
+  overflow: hidden;
+  -ms-scroll-chaining: none;
+      overscroll-behavior: none;
+  padding: 0;
+  touch-action: pinch-zoom;
+  width: 100%;
+}
+.tox.tox-tinymce.tox-fullscreen .tox-statusbar__resize-handle {
+  display: none;
+}
+.tox.tox-tinymce.tox-fullscreen,
+.tox-shadowhost.tox-fullscreen {
+  left: 0;
+  position: fixed;
+  top: 0;
+  z-index: 1200;
+}
+.tox.tox-tinymce.tox-fullscreen {
+  background-color: transparent;
+}
+.tox-fullscreen .tox.tox-tinymce-aux,
+.tox-fullscreen ~ .tox.tox-tinymce-aux {
+  z-index: 1201;
+}