outline: Add detail as virtual text on each item if availaible

lua/symbols-outline.lua

@@ -59,6 +59,7 @@ local function parse(result, depth)
             kind = value.kind,
             icon = symbols.icon_from_kind(value.kind),
             name = value.name,
+            detail = value.detail,
             line = value.selectionRange.start.line,
             character = value.selectionRange.start.character,
             children = children,
@@ -122,6 +123,13 @@ local function write(outline_items, bufnr, winnr)
 
         vim.api.nvim_buf_set_lines(bufnr, -2, -2, false,
                                    {line .. value.icon .. " " .. value.name})
+        if value.detail ~= nil then
+            local lines = vim.fn.line('$')
+            print(lines)
+            vim.api.nvim_buf_set_virtual_text(bufnr, -1, lines - 2,
+                                              {{value.detail, "Comment"}}, {})
+        end
+
         vim.api.nvim_buf_set_keymap(bufnr, "n", "<Cr>",
                                     ":lua require('symbols-outline').goto_location()<Cr>",
                                     {})