Fix duplicated files in folder content and contentFiles

[cyanial]

https://stackoverflow.com/questions/47468941/prevent-duplicating-files-in-nuget-content-and-contentfiles-folders

Test NuGetPackage: MongoDB.Libmongocrypt.

as far as i know, that a nuget package may have both content and contentFiles folder and the contain the same files.

from now on, i change the code to omit content folder when it has contentFiles and it works for my package.

And it fix my isuue #655

@JoC0de @GlitchEnzo ; Please help!!!

[JoC0de]

Sorry for the delay.
Thanks for the workaround.
Would be nice if we add a UnitTest, I could implement it but not sure when I have time.

[cyanial]

Sorry for the delay. Thanks for the workaround. Would be nice if we add a UnitTest, I could implement it but not sure when I have time.

never mind, i'm now using my own version, it works.

And i'm studying this project as well, i'm also trying to add some unit test. but i'm a new starter in C#, so forgive for my poor c# skills.

[cyanial]

👍