Microsoft Cognitive Services Speech SDK Samples

Brianem/1.13.0 samples public push (#745)

* push the 1.13.0 samples content to the public repo.

* update readme.md file with latest release names and dates.

* fix hard tabs in file, to prevent build failure in repository checks.

* convert cs fome from UTF-8 with BOM, to plain UTF-8.  any sounce file with a BOM header is a build break.

* missed some hard tabs.  trying again to remove the hard tabs that breaks the build in the repository validation checks script.

* trying one more time.  seams Visual Studio will not remove a hard tab that is inside a comment block.  So hopefully third time is a charm.

* two more tabs at the end of a comment, so maybe 4th time is a charm...

* new batch samples seem to require newer version of .Net SDK in order to target .net core 3.1.  I'm switching the samples build form VS17 to VS19 to see if that will fix the problem.