Add bither wallet
google play: https://play.google.com/store/apps/details?id=net.bither
source: https://github.com/bither/bither-android
build steps by provider: https://github.com/bither/bither-android/wiki/bulid-bither-android
wallet is on bitcoin.org: https://bitcoin.org/en/wallets/mobile/android/bither/