Non-standard folder structure for PS Module

[bryanbcook]

The Publish-Module cmdlet expects that the .psd1 and .psm1 files are in a folder that has the same name as the Module.

- src\
  - PSBlogger\
     - public\
     - private\
     - PSBlogger.psd1
     - PSBlogger.psm1
  - tests\

Presently the publish.yml re-organizes the files to match this desired structure.

Consider re-organizing the folder structure and supporting unit tests to match the desired folder structure.