Add Data General Dump_II file restore utility.
* Library for SimH Standard magnetic tape images
Simh_tape is an Ada package for handling magnetic tape images in the
[standard format](http://simh.trailing-edge.com/docs/simh_magtape.pdf) used by
[SimH](http://simh.trailing-edge.com/) and many other computer simulators and emulators.
* Remove build-switches
* Fix alire.toml
* Delete simh_tapes-0.1.1-dev.toml
* Add Data General Dump_II file restore utility.
* Restrict to non-Windows OSes
Co-authored-by: Alejandro R Mosteo <amosteo@unizar.es>
Stephen Merrony