Add @types/qunit to root package
Add @types/qunit to root package

Keeps vscode happy when working with entire project.
jpvanhal/orbit.js,jpvanhal/orbit-core,orbitjs/orbit.js,orbitjs/orbit.js,jpvanhal/orbit.js,SmuliS/orbit.js,jpvanhal/orbit-core,orbitjs/orbit-core,SmuliS/orbit.js