IssueNo:#I5HKEJ

Description:Add definition of windowMode in stage-based ability.
Sig:SIG_ApplicationFramework
Feature or BugFix: Feature
Binary Source: No

Signed-off-by: zhangyafei.echo <zhangyafei12@huawei.com>
Change-Id: I6436590e127dd98210d1536bf34c81422b0070bf

runtime/main/extend/systemplugin/napi/ohos_application_AbilityConstant.js

@@ -33,12 +33,20 @@ export const OnContinueResult = {
     REJECT: 1,
     MISMATCH: 2,
 }
+export const WindowMode = {
+    WINDOW_MODE_UNDEFINED: 0,
+    WINDOW_MODE_FULLSCREEN: 1,
+    WINDOW_MODE_SPLIT_PRIMARY: 100,
+    WINDOW_MODE_SPLIT_SECONDARY: 101,
+    WINDOW_MODE_FLOATING: 102,
+}
 export function mockAbilityConstant() {
     const AbilityConstant = {
         LaunchParam,
         LaunchReason,
         LastExitReason,
-        OnContinueResult
+        OnContinueResult,
+        WindowMode
     }
     return AbilityConstant;
 }