feat: tab增加isCardExisted接口

src/base/combination/tab.js

@@ -104,6 +104,10 @@ BI.Tab = BI.inherit(BI.Widget, {
         });
     },
 
+    isCardExisted: function (cardName) {
+        return this.layout.isCardExisted(cardName);
+    },
+
     getSelect: function () {
         return this.curr;
     },

typescript/base/combination/tab.ts

@@ -28,4 +28,6 @@ export declare class Tab extends Widget {
     getTab<T>(v: string | number): T;
 
     populate(): void;
+
+    isCardExisted(): boolean;
 }