Missing declarations file

[bekand]

Describe the bug
Since v2.87.4, the morphir-elm/lib/dist/main.d.ts file is missing from the NPM package.
This causes imports to break, as the compiler can't find the specified module.

To Reproduce

1. Explicitly npm install version 2.87.4 or 2.87.5
2. try to import something from the package in your typescript project using something like
   import {getModules} from 'morphir-elm'

Expected behavior
The module is resolved, the import works as expected.