Add bash auto-completion support plz!

[cnrat]

Just put this to /etc/bash_completion.d/genact.

#!/bin/bash

_genact_completions()
{
    local cur prev opts modules shells
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    
    opts="-l --list-modules -m --modules -s --speed-factor --exit-after-time --exit-after-modules --print-completions --print-manpage -h --help -V --version"
    modules="mkinitcpio kernel_compile cryptomining simcity composer cc download docker_build botnet memdump ansible bootlog julia docker_image_rm rkhunter weblog cargo bruteforce"
    shells="bash elvish fish powershell zsh"

    case "${prev}" in
        -m|--modules)
            COMPREPLY=( $(compgen -W "${modules}" -- ${cur}) )
            return 0
            ;;
        --print-completions)
            COMPREPLY=( $(compgen -W "${shells}" -- ${cur}) )
            return 0
            ;;
        *)
            if [[ ${cur} == -* ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
            fi
            return 0
            ;;
    esac
}

complete -F _genact_completions genact