todo.sr.ht version upgrade

I pushed this upgrade through in the hope that it would fix
https://todo.dominic-ricottone.com/~dricottone/huttese/4 .

Unfortunately, it did not. Nonetheless, the package is upgraded.

Updates from first deployment

git.sr.ht target was mangled.

py3-colour, builds.sr.ht, and py3-srht target versions had to be bumped
down. The first is due to a unit test error; the others are due to
unreleased versions that apparently upstream is keeping private.

Several APKBUILD files had to be updated for version numbers and
checksums. Notably, py3-pygments had to be bumped down a version. It
seems that an updated APKBUILD was pushed to the repo before an updated
apk was pushed to the mirror. I am choosing to follow the mirror as the
canonical target.

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.

todo.sr.ht: use make

*.sr.ht: Enable prometheus multiprocessing mode

todo.sr.ht: upgrade to 0.64.23

todo.sr.ht: remove pystache dependency

todo.sr.ht: upgrade to 0.64.13

todo.sr.ht: arch=all

todo.sr.ht: add go to makedeps

todo.sr.ht: forgot to build Go binary

todo.sr.ht: add API service

*.sr.ht: move nginx files

todo.sr.ht-nginx: add sr.ht-nginx dependency

todo.sr.ht: update version number

todo.sr.ht: add -nginx subpackage

todo.sr.ht: overhaul init files

Add py3-aiosmtpd to todo.sr.ht dependencies

Add todo.sr.ht webhooks service

Add todo.sr.ht-lmtp