add dotnet completions

.zshc/completion/dotnet.zsh

@@ -0,0 +1,19 @@
+# zsh parameter completion for the dotnet CLI
+
+_dotnet_zsh_complete()
+{
+  local completions=("$(dotnet complete "$words")")
+
+  # If the completion list is empty, just continue with filename selection
+  if [ -z "$completions" ]
+  then
+    _arguments '*::arguments: _normal'
+    return
+  fi
+
+  # This is not a variable assignment, don't remove spaces!
+  _values = "${(ps:\n:)completions}"
+}
+
+compdef _dotnet_zsh_complete dotnet
+