MSVC 2019 fix

[teor292]

Hi. I needed to compile Simd on Visual studio 2019 and I have got some problems.

1. There are no sln and project file for VS2019. So, I copy it from VS2017w and update.
2. It doesn't compile: unknown _MM_K0_REG identifier, so I change if def.
3. There was a test error on ConditionalCount16i >=
   Here screen: https://ibb.co/HHysQnb
   I have done some test and I think that it is a VS2019 compiler bug. It is related to function overload and optimization, because it exist only in Release version (x64, not tested on x32) and after renaming two functions (GreaterOrEqual16i to GreaterOrEqual16i_m256 and GreaterOrEqual16i_m128) the tests was passed. So, I made a commit with such changes.

[ermig1979]

It's a good job!
Minor notes: PlatformToolset property is better to be modified in Prop.props file (unfortunately it is have to make manually in XML file).

[teor292]

Thanks.
Ок, I didn't know that.