ZeroToOne v1.2

In this version, users can:

1. Create exercises
2. List exercises
3. Change exercise names
4. Delete exercises
5. Find exercises by an exercise name
6. Add sets to exercises
7. Edit a set in exercises
8. Delete sets in exercises

For developers:

• Modularised codebase such that developers can easily create new modules
• Allowed a "plug and play" development workflow