Transpile the nextcloud-vue-collection package

It should support the same browsers as this component, but there seems
to be a regression [1] that breaks the transpilation. Hence including
the package here for the Babel transformation.

[1] https://github.com/juliushaertl/nextcloud-vue-collections/issues/302



Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>