Initialize `mise` with zplug example script

init-mise-with-zplug.zsh

# Initialize `mise` with zplug example script
# https://mise.jdx.dev/
if ! type "mise" > /dev/null; then
    echo "mise is not installed. Installing mise..."
    curl https://mise.run | sh
fi
eval "$(~/.local/bin/mise activate zsh)"

if ! mise which usage > /dev/null 2>&1; then
    echo "mise usage is not installed. Installing usage with mise..."
    mise use -g usage
fi

zplug "wintermi/zsh-mise"