Android NDK tuorial: immediate crash after start

Ubuntu :19.04
Bazel : 1.1.0
SDK API :29
NDK : 20

Binary is built with ` --fat_apk_cpu=armeabi-v7a,arm64-v8a` flag. Both so files are in place, but both of them don't have the native method from `native-lib.cpp`

```Shutting down VM
FATAL EXCEPTION: main
Process: com.example.android.bazel, PID: 30069
AndroidRuntime: java.lang.UnsatisfiedLinkError: No implementation found for java.lang.String com.example.android.bazel.MainActivity.stringFromJNI() (tried Java_com_example_android_bazel_MainActivity_stringFromJNI and Java_com_example_android_bazel_MainActivity_stringFromJNI__)
at com.example.android.bazel.MainActivity.stringFromJNI(Native Method)
at com.example.android.bazel.MainActivity.onCreate(MainActivity.java:20)
at android.app.Activity.performCreate(Activity.java:7802)
at android.app.Activity.performCreate(Activity.java:7791)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1306)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
```