Restructure samples

[viktorvan]

Is your feature request related to a problem? Please describe.

The samples are growing pretty long. We should do something to separate the code for the different apis (SwedishPersonalIdentityNumber, SwedishCoordinationNumber, IndividualIdentityNumber). And it should also be prepared to handle more apis (for example CompanyNumber, CompanyRegistrationNumber etc.).

[viktorvan]

If you can think of something for the C# samples @PeterOrneholm then I'll update the samples for F# in similar way.

[PeterOrneholm]

The C# was updated in #113. But let's use this issue to keep track of sampels overall. We will probably have to update samples again, and the F# ones as well.