Merge branch...

Merge branch 'amiranda/119-add-a-user-level-library-for-functionalities-not-requiring-direct-scord-intervention' into 'main'

Resolve "Add a user level library for functionalities not requiring direct `scord` intervention"

This MR adds the library `libscord-user.so` with user-level interfaces to request
data transfers from `scord` from application code.

Closes #119

See merge request !103