Detect `codacy-cli-v2` in $PATH

[selfagency]

You should add this to the top of the codacy.sh generated by the extension.

# Prefer a globally available codacy-cli-v2 from PATH.
if command -v "$bin_name" > /dev/null 2>&1; then
    run_command="$(command -v "$bin_name")"

    if [ "$#" -eq 1 ] && [ "$1" = "download" ]; then
        echo "Codacy cli v2 download succeeded (already available in PATH)"
    else
        "$run_command" "$@"
    fi

    exit $?
fi