ref https://linear.app/tryghost/issue/DEV-20/faster-builds
- `build` should be the overall script to build the package
- `build:ts` should only build TypeScript
- by having them switched around, `build:ts` would call `yarn build`,
and `yarn` adds several hundreds of milliseconds of time to each build
refs https://github.com/TryGhost/Arch/issues/46
- This module with be a placeholder for "filter expansions" we use across the codebase. For now it will only contain the expansions for the "post" resource, but any new or refactored expansions should land here too.