Add an `a-pack` release file (package format for Alpine)

[John15321]

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Crate a package generating release CI job in the release workflow for our project which should later be added to the release files. Bare in mind that a new testing CI job will be required to make sure it's working. The package should be for Alpine (preferably find a tool similar to (cargo-deb that generates it from a rust project).

Related to:

• https://github.com/John15321/rust-pip/issues/45
• https://github.com/John15321/rust-pip/issues/44
• https://github.com/John15321/rust-pip/issues/42

Blocked by:

• https://github.com/John15321/rust-pip/issues/31