feat!(cmp): change autocomplete behaviour

- BREAKING CHANGE: no more automatic popping droplist
- BREAKING CHANGE: <CR> to complete instead of <C-l>

lua/complete.lua

@@ -17,6 +17,7 @@ cmp.setup {
   },
   completion = {
     completeopt = 'menu,menuone,noinsert',
+    autocomplete = false,
   },
   mapping = cmp.mapping.preset.insert {
     ['<C-n>'] = cmp.mapping.select_next_item(),
@@ -24,7 +25,7 @@ cmp.setup {
     ['<C-b>'] = cmp.mapping.scroll_docs(-4),
     ['<C-f>'] = cmp.mapping.scroll_docs(4),
     ['<C-Space>'] = cmp.mapping.complete {},
-    ['<C-l>'] = cmp.mapping.confirm {
+    ['<CR>'] = cmp.mapping.confirm {
       behavior = cmp.ConfirmBehavior.Replace,
       select = true,
     },