Separate podman and docker

[zancas]

Atop: #884 merging that will simplify this PR.
Supersedes: #877 (comment)
Fixes: #885

The purpose of this PR (apart from the obnoxious lint) is to maximize the reuse of code between docker and podman to make it easier to use either option.

To test on podman:

paru -S podman
cargo install cargo-make
makers run-zainod podman

This PR should be tested against docker by a reviewer.

[fluidvanadium]

on commit 30ad235

$makers run-zainod podman
[cargo-make] INFO - makers 0.37.24
[cargo-make] INFO -
[cargo-make] INFO - Build File: Makefile.toml
[cargo-make] INFO - Task: run-zainod
[cargo-make] INFO - Profile: development
[cargo-make] INFO - Running Task: run-zainod

Image zainod:1.91.1-30ad2358 not found — building...
[cargo-make][1] INFO -
[cargo-make][1] INFO - Build File: Makefile.toml
[cargo-make][1] INFO - Task: build-zainod
[cargo-make][1] INFO - Profile: development
[cargo-make][1] INFO - Running Task: build-zainod
Building zainod runtime image
Engine: podman
Rust: 1.91.1
Commit: 30ad235
Tag: zaino-runtime:1.91.1-30ad2358
podman: symbol lookup error: podman: undefined symbol: seccomp_export_bpf_mem
Error while executing command, exit code: 127
Error while executing command, exit code: 105