Add bun-types, add typechecking, add `child_process` types (#1475)

* Add bun-types to packages

* Improve typing

* Fix types in tests

* Fix dts tests

* Run formatter

* Fix all type errors

* Add strict mode, fix type errors

* Add ffi changes

* Move workflows to root

* Add workflows

* Remove labeler

* Add child_process types

* Fix synthetic defaults issue

* Remove docs

* Move scripts

* Run prettier

* Include examples in typechecking

* captureStackTrace types

* moved captureStackTrace types to globals

* Address reviews

Co-authored-by: Colin McDonnell <colinmcd@alum.mit.edu>
Co-authored-by: Dylan Conway <dylan.conway567@gmail.com>