Generated 2022 week 4 schema

[tspence]

Key changes:

• Better nullability for parameters
• Cleaned up LockstepApi file

[tspence]

More changes:

• Switched the build process to use rollup
• Set up imports in the index.ts file so that all objects are included
• Fixed an issue where the type "File" was not valid - switched it to a Uint8Array.
• Corrected imports of OS and URL using NodeJS types
• Compiled the program down to a single file - lockstep-api.js
• Included a sourcemap and a .d.ts file
• Created a proper "npm run build" task
• Fixed some configuration options in tsconfig.json
• Switcfhed ErrorResult to be a class rather than a type
• Code generator now emits the new patterns
• According to ESLint, we prefer doublequotes rather than singlequotes, so switched to those

[dhric]

Reviewed with Ted on the use of Rollup.js.

[tspence]

Per @dhric 's approval, landing!