Add prebuild. (#53) #152

	name: C/C++ CI

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	build:
	runs-on: ubuntu-latest
	name: build
	steps:
	- uses: actions/checkout@v2
	id: checkout-code
	name: Checkout
	- id: dependencies
	name: Build Dependencies
	run: sudo apt-get update && sudo apt-get install -y nodejs node-gyp libssl1.1
	- id: get-libjpeg
	name: Get libjpeg
	run: curl -XGET http://www.ijg.org/files/jpegsrc.v9d.tar.gz -o jpegsrc.v9d.tar.gz
	- id: install-libjpeg
	name: Install libjpeg
	run: tar xofp jpegsrc.v9d.tar.gz && cd jpeg-9d && ./configure --with-pic && make && sudo make install
	- id: get-libraw
	name: Download LibRaw Release
	run: curl https://www.libraw.org/data/LibRaw-0.21.1.tar.gz --output LibRaw-0.21.1.tar.gz
	- id: install-libraw
	name: Install LibRaw
	run: tar xzvf LibRaw-0.21.1.tar.gz && cd LibRaw-0.21.1 && ./configure --with-pic --disable-openmp && touch * && make && sudo make install
	- id: set-ld-library
	name: LD Library
	run: sudo ldconfig -v && LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
	- id: clean-libjpeg-files
	name: Clean libjpeg files
	run: rm -rf jpeg-9d jpegsrc.v9d.tar.gz
	- id: clean-libraw-files
	name: Clean LibRaw Build Files
	run: rm -rf LibRaw-0.21.1 LibRaw-0.21.1.tar.gz
	- id: global-npm
	name: Setup Global npm Packages
	run: sudo npm i -g node-gyp node-gyp-build
	- id: install-npm
	name: Install npm Packages
	run: npm install
	- id: lint
	name: Lint
	run: npm run format-check && npm run lint
	- id: build-package
	name: Build Package
	run: node-gyp rebuild
	- id: unit-tests
	name: Run Unit Tests
	run: npm run test

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