demonstrate changes to get esm graphql-js working with jest

strategy: use babel to transform our dependency

(A) globally: add @babel/preset-env as a devDependency to support 3 below

(B) in package using an esm dependency such as graphql canary:
1. switch our "ts-jest" preset to "ts-jest/presets/js-with-babel"
2. override the default transformIgnorePatterns with an exception for our package of interest
3. add a babel config file with the @babel/preset-env preset targetting node

-- The babel config files could be a base + override like the other configs in this repo, but it is pretty abbreviated, and this is just a demonstration, so I held off.

Author: yaacovCR