[Windows Support] Add Windows Target Support

• After Salt is installed a registry setting needs to be set:

  • KEY: HKLM:\SOFTWARE\Salt Project\Salt
  • ValueName: root_dir
  • value: C:\ProgramData\Salt Project\Salt

• Everything needs to install to %WINDIR%\temp by default.

• Test singlebin (does it unzip every time we fork on windows?)

• Do we need to handle multiple Salt installs? Re-name the process?