Separate svg and gcode code from FormsUI

[RafaelEstevamReis]

I am in progress to make LaserGRBL functions accessible in linux and via command line
The main issue is that there are a lot of dependency in a lot of classes, is hard to isolate and test
To be able to do so I moved all non-UI stuff to two Library Projects and solved most of dependency problems trying to keep the changes minimal
I made all changes in small commits to be easier to follow

In summary I:

• Separated Cyotek files from RasterConverter/Dithering to a new Lib Project
• Separated non Forms files to a new Lib Project
  • CSV folder
  • CsPotrace folder
  • SvgConverter folder
  • SvgLibrary folder
  • GrblFile
  • GrblCommand
  • Autotrace folder

I understand if this PR is too big to be revised, let me know if I can help in the process as the new library can be improved and tested more easily without any changes in the UI