Add Neovim/Vim8 option to config wizard

This commit adds minimal config option for Neovim/Vim8 editors
in the config wizard. It assumes use of CoC engine to facilitate
LSP.

build.zig

@@ -34,7 +34,7 @@ pub fn config(step: *std.build.Step) anyerror!void {
 
     std.debug.warn("Successfully saved configuration options!\n", .{});
 
-    const editor = try zinput.askSelectOne("Which code editor do you use?", enum { VSCode, Sublime, Kate, Other });
+    const editor = try zinput.askSelectOne("Which code editor do you use?", enum { VSCode, Sublime, Kate, Neovim, Vim8, Other });
     std.debug.warn("\n", .{});
 
     switch (editor) {
@@ -78,6 +78,20 @@ pub fn config(step: *std.build.Step) anyerror!void {
                 \\}}
             , .{});
         },
+        .Neovim, .Vim8 => {
+            std.debug.warn(
+                \\To use ZLS in Neovim/Vim8, we recommend using CoC engine. You can get it from 'https://github.com/neoclide/coc.nvim'.
+                \\Then, simply issue cmd from Neovim/Vim8 `:CocConfig`, and add this to your CoC config:
+                \\{{
+                \\  "lanuageserver": {{
+                \\    "zls" : {{
+                \\      "command": "command_or_path_to_zls",
+                \\      "filetypes": ["zig"]
+                \\    }}
+                \\  }}
+                \\}}
+            , .{});
+        },
         .Other => {
             std.debug.warn(
                 \\We might not *officially* support your editor, but you can definitely still use ZLS!