Add Windows MSBuild pipeline (#1946)

This PR adds, in addition to the existing windows CMake pipeline, a
Github Action to build release and debug installers for Windows. It
includes the espeak-ng-data path fix from
https://github.com/espeak-ng/espeak-ng/issues/1705. ~~Unfortunately, in
order to build successfully, it removes Arabic and Faroese from the
Windows installer for the reasons listed in
https://github.com/espeak-ng/espeak-ng/issues/1774~~ (which
incidentally, I think, demonstrates the value of having this as a
separate CI pipeline)