vls: init at 0.7.2

vue-language-server is now deprecated and should be replaced by vls.

See: https://www.npmjs.com/package/vue-language-server

pkgs/development/node-packages/node-packages.json

@@ -252,6 +252,7 @@
 , "vega-cli"
 , "vega-lite"
 , "vim-language-server"
+, "vls"
 , "vscode-css-languageserver-bin"
 , "vscode-html-languageserver-bin"
 , "vscode-json-languageserver"