Key attestation was introduced in Android 7.0, but Android 7.x doesn't
have InMemoryDexClassLoader so our Zygisk module is incompatible.
In general, users on such old versions of Android don't need to bypass
hardware-backed attestation (which isn't even applicable on Android 6
and older), so allow them to install the module without the Zygisk part.
Closes#156.
Android 7.x lacks the InMemoryDexClassLoader API, which is necessary for
the module to load Java code, and is unlikely to support hardware
attestation on any production devices anyway.
Fixes#124, #127
This ensures that GMS will never start before it's removed from the
DenyList, even if another module's service.sh is blocking our script.
Suggested-by: osm0sis <osm0sis@outlook.com>
