Currently there are Archetypes for basic C# projects. To create a library project:
mvn archetype:create -DarchetypeGroupId=org.apache.maven.dotnet.csharp \
-DarchetypeArtifactId=maven-archetype-class-library \
-DarchetypeVersion=0.16-incubating-SNAPSHOT \
-DgroupId=<<groupId>> \
-DartifactId=<<artifactId>>
The archetypeArtifactId can be specified as any of the following: