Add example output to all API methods (replacement for #3 which is outdated)

- [x] **Authentication**
- [x] **Assessments**
- [x] **Assets**
- [x] **Configurations**
- [x] **Configuration Coverage**
- [x] **Guidance** (and *Prioritized Guidance*)
- [x] **Threats**
- [x] **Threat Vectors**
- [x] **Security Controls**
- [ ] **Security Control Coverage**