✨ `++` operator for `NonNegativeLong` type

**Is your feature request related to a problem? Please describe.**
With the upcoming release of `net10.0` and `C#14`, we could be able to implement overload for `++` operator on any type.

**Describe the solution you'd like**
The `++` operator on `NonNegativeiLong` should increment any `NonNegativeLong` value so that

```csharp
NonNegativeLong value = 0;
value = value++;

Console.WriteLine(value) // <= value should be equal to 1
```

**Describe alternatives you've considered**
N/A

**Additional context**
N/A