Verify Android releases

Rootpk Store Android releases can be verified using apksigner:

apksigner verify --print-certs --verbose rootpk-store.apk

The output should looks like:

Verifies
Verified using v1 scheme (JAR signing): true
Verified using v2 scheme (APK Signature Scheme v2): true
...
Signer #1 certificate DN: CN=rootpk.com
Signer #1 certificate SHA-256 digest: aa63516ccc1e82627c27845fe076f2f572d7fe5af9074b49d78cf1d7e1f473a4
...