Manage delegated admins

Upgrade AGP and gradle wrapper version
Fix navigation bug of Shizuku
Fix Action build

app/src/main/aidl/com/bintianqi/owndroid/IUserService.aidl

@@ -6,4 +6,5 @@ interface IUserService {
     String execute(String command) = 1;
     int getUid() = 2;
     Account[] listAccounts() = 3;
+    void destroy() = 16777114;
 }