[FEATURE] Add support for apt update

[louie-github]

Is it not possible to add functionality to speed up apt update?
This is usually the slowest portion of updating for me.
Sorry if I can't give much info, all I know is that
sudo apt update --print-uris works too.

[Lasall]

This was previously discussed in #36. I agree with you this could be the slowest part in the update/upgrade process. The implementation I did back then was much slower than apt update and also incomplete.

I think when tackling this issue an implementation (rewrite) of apt-fast as APT transport should be considered. This can be done even with shell following the APT Method Interface specification. One example how this could be achieved from an external project is apt-transport-s3 (python).