feat: built-in select has winblend option

lua/dressing/config.lua

@@ -54,6 +54,9 @@ local default_config = {
       col = 0,
       border = "rounded",
 
+      -- Window options
+      winblend = 10,
+
       -- These can be integers or a float between 0 and 1 (e.g. 0.4 for 40%)
       width = nil,
       max_width = 0.8,

lua/dressing/select/builtin.lua

@@ -42,6 +42,7 @@ M.select = function(config, items, opts, on_choice)
     style = "minimal",
   }
   local winnr = vim.api.nvim_open_win(bufnr, true, winopt)
+  vim.api.nvim_win_set_option(winnr, "winblend", config.winblend)
   vim.api.nvim_win_set_option(winnr, "cursorline", true)
   if vim.fn.exists("&cursorlineopt") ~= 0 then
     vim.api.nvim_win_set_option(winnr, "cursorlineopt", "both")