Add vbscript resource

[chris-rock]

This PR adds support for vbscript for Windows:

# script with multiple lines
myscript = <<-EOH
  WScript.Echo "hello"
EOH

describe vbscript(myscript) do
  its('stdout') { should eq "hello\r\n" }
end

# simple script without any newline
describe vbscript("Wscript.Stdout.Write \"hello\"") do
  its('stdout') { should eq 'hello' }
end

[arlimus]

Fantastic description!

[arlimus]

Kudos, great resource 👍 :)