GET endpoint for retrieving all anthologies in a library

**Description:** As a user, I will be able to see an archive/library that contains publications/anthologies
**Acceptance Criteria:**
-  GET /library/:libraryId/anthology
   - This is used to get all anthologies in a library
   - Response: 200 with anthologies object
   
**Supporting Materials:** N/A
**Dependencies:** N/A
**Effort Estimate:** 2
