feat: enable virtual_text for diagnostic

lua/config/options.lua

@@ -32,6 +32,9 @@ vim.o.expandtab = true
 vim.o.ignorecase = true
 vim.o.smartcase = true
 
+-- diagnostic show virtual text
+vim.diagnostic.config({ virtual_text = true })
+
 -- osc52 escape codes copy
 local function ocs52_paste_fail()
     vim.notify("can't paste via osc52", vim.log.levels.WARN)