nvim: add .clang-format as root marker

.config/nvim/lua/my/ui.lua

@@ -15,6 +15,8 @@ packer.use {
         vim.g.ctrlp_map = '<C-P>'
         vim.g.ctrlp_cmd = 'CtrlP'
         map('n', '<Leader><S-b>', ':CtrlPMRUFiles<cr>')
-        vim.g.ctrlp_root_markers = { '.project', '.luarc.json' }
+        vim.g.ctrlp_root_markers = {
+            '.projectile', '.luarc.json', '.clang-format'
+        }
     end
 }