Tooling update: new version of the nimlangserver and the vscode extension

[gcao]

hi I've tried to use the official extension a few times but was having issue 
get symbols to work. Means when I press Cmd-Shift-O to open symbols view, it 
just says "No editor symbols". The other two Nim language server extension 
works at least partially (when there are multiple procs with same name, only 
the first one is displayed. It's annoying to not be able to find all of them 
and jump to any I want)