Use services' full domain name with LNURL-auth

Phoenix is now using the service's full domain name (like in the LUD-04 specifications) when creating the LNURL-auth linking key. For existing services where users may already have accounts on, Phoenix keeps using the etld+1 domain name so that those accounts are still accessible.

• (phoenix-legacy) : https://github.com/ACINQ/phoenix/compare/android-legacy-v1.4.23...android-legacy-v1.4.24
• (eclair-core) : https://github.com/ACINQ/eclair/compare/v0.4.16-android-phoenix...v0.4.17-android-phoenix

Verifying signatures

You will need gpg and our release signing key 7A73FE77DE2C4027. Note that you can get it:

• from our website: https://acinq.co/pgp/drouinf.asc
• from github user @sstone, a committer on eclair: https://api.github.com/users/sstone/gpg_keys

To import our signing key:

$ gpg --import drouinf.asc

To verify the release file checksums and signatures:

$ gpg -d SHA256SUMS.asc > SHA256SUMS.stripped
$ sha256sum -c SHA256SUMS.stripped