Create pdf with all ZX Spectrum keys. This can be used to create a sticker sheet for a custom keyboard or eg. Dk'tronics keyboard

Michel c5960380a1 Commit with files :-)		%!s(int64=3) %!d(string=hai) anos
ZX-Keyboard	c5960380a1 Commit with files :-)	%!s(int64=3) %!d(string=hai) anos
.gitignore	8d76fa9b85 First sheet with all keys	%!s(int64=3) %!d(string=hai) anos
ZX-Keyboard.sln	c5960380a1 Commit with files :-)	%!s(int64=3) %!d(string=hai) anos