APK size

Looks like with the last version, APK size increased by factor 6 – due to the `libaw_server.so` having increased by factor 18 (from around 5M to 90M). As that exceeds the limits in my repo by factor 3 (max space per app is 30M), I had to remove v0.10 and disable auto-update.

Is there any chance to decrease APK-Size again? I don't know if whatever blew up that library could be reverted – but e.g. an armeabi-v7 only build would just fit in 30M. Should none of the two be possible, I guess it's best to remove [ActivityWatch from my repo](https://apt.izzysoft.de/fdroid/index/apk/net.activitywatch.android), as providing an outdated version is not a good idea.