Nvim: switch from nvim-cmp to epo

.config/nvim/lua/plugins/epo.lua

@@ -0,0 +1,13 @@
+return {
+  'nvimdev/epo.nvim',
+  config = function()
+    -- the default completetopt set by epo
+    vim.opt.completeopt = "menu,menuone,noselect,popup"
+
+    -- use default settings
+    require('epo').setup({
+      fuzzy = true,
+      signature_border = 'rounded',
+    })
+  end
+}