Add operators for ByteSize and int & double (e.g. *, /, etc)

[Adam Coulter]

Support operators like the following:

ByteSize size = ByteSize.FromBytes(1000);
double pi = Math.PI;

ByteSize sizeTimesThree = size * 3;
ByteSize sizeDividedByPi = size / pi;

[Juliano Leal Goncalves]

Just hit a case right after referencing the library for the first time, where I wanted to divide the total memory by "the number of threads" and noticed there is no division overload.

Would make my code simpler if it had it.

Having said that, I don't agree with having an overloaded ^ operator @AdamCoulterOz , since that's normally used for bitwise XOR. It would be extremely misleading to overload it to do something completely different.

[Adam Coulter]

Ha, I didn't realise c# didn't use ^ as an exponent operator. I completely agree in that case.

[Omar Khudeira]

Added in 2.1.0

[Adam Coulter]

@omar this hasn't actually been implemented. I would expect to be able to divide or multiply ByteSize with a primitive number (i.e. int or double, etc).

[Adam Coulter]

I've just realised as well that the division operator should return a double, not a ByteSize, as it's now a ratio, not in units of bytes.