Reshaping repo

The repo is designed for use with an existing builds.sr.ht service.
Besides lacking that, I am more interested in a containerized workflow
powered by a Makefile. Package source code will live in `pkgsrc/`,
packages will be built into `pkg/`, and packaging keys will be
generated into `keys/`.

Alos trimmed the packages down to what I will build.

py3-*: reset pkgrel

py3-*: bump pkgrel for python rebuild

py3-*: bump pkgrel and update upstream versions

Update all non-sr.ht Python packages

py3-sshpubkeys: upgrade to 3.3.1

This should allow for FIDO/U2F ssh keys of various types.

Also, it seems there was a typo in the dependencies referencing
py3-crypto when py3-cryptography is what is needed[1].

[1]: https://github.com/ojarva/python-sshpubkeys/blob/c81fbf0668c58a7d5518772127b0ad2aeda79076/setup.py#L36

py3-sshpubkeys: bump pkgrel

py3-sshpubkeys: bump pkgrel

sr.ht/py3-sshpubkeys: bump pkgrel

Update all dependency packages

Package meta.sr.ht