[test-runner] Run render test runner as a NativeActivity app on android device (#15827)

* [test-runner]Add android render-test-runner NativeActivity app

* [test-runner] Fix cmake for CI build failure

* [test-runner] Update folder location, change app configureation

* [test-runner] Add running instruction

render-test/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.native_activity"
+          android:versionCode="1"
+          android:versionName="1.0">
+  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+  <application
+      android:allowBackup="false"
+      android:fullBackupContent="false"
+      android:icon="@mipmap/ic_launcher"
+      android:label="@string/app_name"
+      android:hasCode="false">
+
+    <activity android:name="android.app.NativeActivity"
+              android:label="@string/app_name"
+              android:screenOrientation="portrait">
+      <meta-data android:name="android.app.lib_name"
+                 android:value="mbgl-render-test-runner" />
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+  </application>
+
+</manifest>

render-test/android/app/src/main/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">RenderTestRunner</string>
+</resources>