pull @scdh/seed-xml-transformer-ts-client from gitlab registry

This fixes #6

This needs the "Forward npm package requests" option enabled in the
top level group and in all subgroups on the path to the package
registry. See Settings > Packages and registries!

Author: lueck

.npmrc

@@ -0,0 +1,2 @@
+# 805 is the group ID of SCDH toplevel group
+@scdh:registry=https://zivgitlab.uni-muenster.de/api/v4/projects/805/packages/npm/