Struct that implements the logic of the reduced fraction, and NUnit tests for its verification. Conversion operations to/from int, double are implemented. Arithmetic operations on reduced fractions are implemented.

Operations implemented:

1. ReduceFraction * ReduceFraction
2. ReduceFraction / ReduceFraction
3. ReduceFraction + ReduceFraction
4. ReduceFraction - ReduceFraction
5. ReduceFraction * int
6. ReduceFraction / int
7. ReduceFraction + int
8. ReduceFraction - int

Convertations implemented:

1. ReduceFraction to double (implicit)
2. ReduceFraction to int (explicit)
3. int to ReduceFraction (implicit)

Learn more: https://mathworld.wolfram.com/ReducedFraction.html