Add Windows and macOS Support (#1)

* Re-base onto upstream master

* Use os over operating-system per json schema suggestion

* Upgrade dependencies

* Update action.yml syntax

* Restructure repo on latest typescript-action

* Update workflow.yml to use same node version as action.yml

* Pull in improvements from open PRs. Fix package.json scripts

* Type function return arguments

* Don't eslint automatic formatting changes

* Initial implementation of ghc+cabal install for linux/mac/windows

* Update README

* Fix cabal version in action.yml

* Implement initial simplistic test suite

* Test action with CI

* Use chocolatey directly to install ghc and cabal

* Try pre-installed tool on linux first

* Clean up documentation

* Expand README

* Test super old GHC on ubuntu

* Implement support for stack

* Update documentation about Stack support

* Test stack install in Github Actions CI

authored-by: Jared Weakly <jweakly@galois.com>

jest.config.js

@@ -4,8 +4,6 @@ module.exports = {
   testEnvironment: 'node',
   testMatch: ['**/*.test.ts'],
   testRunner: 'jest-circus/runner',
-  transform: {
-    '^.+\\.ts$': 'ts-jest'
-  },
+  transform: {'^.+\\.ts$': 'ts-jest'},
   verbose: true
-}
+};