Make Debian packages for BlockchainCommons cli tools compatible with TailsOS

[nochiel]

Ref. https://github.com/BlockchainCommons/Community/issues/154

The Debian releases we have for CLI tools are not compatible with Tails.

uname -a on Tails gives us: Linux amnesia 6.1.0.5-amd64 [...] Debian 6.1.12-1 (2023-02-15) The libc version is: libc6:2.31-13.

• Release Debian packages that target these versions.
  • [x] bytewords-cli
  • [x] keytool-cli
  • [x] seedtool-cli
  • [x] sweeptool
  • [x] lifehash
  • [x] musign
• [x] Add Dockerfile to enable building of packages.