Provide standalone package

[MrTomRod]

First off, thanks for this fantastic package!

I want to use it as a dependency in python, and it would be better if I could install without npm, as a standalone package.

Luckily, this is easy achieve:

sudo npm i pkg -g pkg  # install pkg globally
git clone https://github.com/elrumordelaluz/outline-stroke-cli.git && cd outline-stroke-cli  # clone this repo
npm install  # install dependencies
pkg .  # create standalone executable
mkdir outline-stroke-cli-1.1.1 && cp outline-stroke-cli-linux outline-stroke-cli-1.1.1  # prepare deployment
mkdir outline-stroke-cli-1.1.1/node_modules && cp -r node_modules/sharp outline-stroke-cli-1.1.1/node_modules  # the sharp module cannot be bundled automatically
tar cfJ outline-stroke-cli-1.1.1.tar.xz outline-stroke-cli-1.1.1/  # compress

Final tar.xz size: uncompressed: 115M, compressed: 30M

Usage:

wget https://cloud.roder.casa/s/m9Njjpe5Y5jkH4X/download -O outline-stroke-cli-1.1.1.tar.xz  # Download
tar -Jxvf outline-stroke-cli-1.1.1.tar.xz  # Extract
./outline-stroke-cli-1.1.1/outline-stroke-cli-linux in.svg  # Run

I was wondering if you could routinely create these packages and add them to github releases? Maybe, stroke can be persuaded to make their package pkg-friendly (issue).