EU::Typemaps: Helper module for easy typemap inclusion in XS

EU::Typemaps: Helper module for easy typemap inclusion in XS

In order to be able to deprecate certain typemaps from the core and send
them to a peaceful retirement on the CPAN, it's necessary to make it
easy to share and include these typemaps in case they're used despite
CPAN greps claiming the opposite. This helper module facilitates
non-copy-and-paste sharing of typemaps by adding a dependency and
including a single line of code in the XS.