This gets us a step into the direction of convenience that qmake
offered:
* QtBase is configured with a long command line (especially when
cross-compiling)
* Afterwards application developers (or other module builds) can
just use qmake && make
By generating a toolchain file we can capture vcpkg and toolchain
chain-loading and a shell script can take care of providing the prefix
path.
Change-Id: Ided81f5432cab862306f2bea86cfe8e56adf71b0
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
