Extract ASL-in-APK as a raw resource

To embed the app metadata bundle in the apk, it must be included as a
raw resource in the APK (i.e. "res/raw/app-metdata") The android
manifest must also define a property with app metadata resource:

<property android:name="android.content.PROPERTY_ANDROID_SAFETY_LABEL"
        android:resource="@raw/app-metadata"/>

Bug: 338418504
Test: atest InstallAppMetadataTest
Flag: NONE
Change-Id: Ic5b4995045db3e24c0f2c995f2903c6df12dc797