Exported type definitions include `lodash` without including lodash types

This package exports type that include references to `lodash`, but the `@types/lodash` package is not listed as a dependency. Attempts to use exports that reference Lodash types will result in a type error unless the `@types/lodash` package is added.

We will need to elevate `@types/lodash` to a `dependency`, or update type exports to no longer directly extend Lodash types.