feat: add the tabnine plugin

lua/custom/plugins/tabnine.lua

@@ -0,0 +1,14 @@
+return {
+  'codota/tabnine-nvim',
+  build = './dl_binaries.sh',
+  config = function()
+    require('tabnine').setup {
+      disable_auto_comment = true,
+      accept_keymap = '<Tab>',
+      dismiss_keymap = '<C-]>',
+      debounce_ms = 800,
+      suggestion_color = { gui = '#808080', cterm = 244 },
+      exclude_filetypes = { 'TelescopePrompt' },
+    }
+  end,
+}