add resources with ...

git submodule add https://iffgit.fz-juelich.de/phd-project-wasmer/resources/latex-resources resources

.gitmodules

+[submodule "resources"]
+	path = resources
+	url = https://iffgit.fz-juelich.de/phd-project-wasmer/resources/latex-resources

resources @ b77470b7

+Subproject commit b77470b789cde8bf1732d6af327ac4f942f5dc4c