[Feature Request] Autocomplete also inserts brackets at the end of functions()

I did some research, and pretty much every other major language extension like javascript, c#/++ and python have settings to allow autocomplete to add brackets at the end of function calls. It would be nice to see this feature implemented in this extension.

As an example imagine I want to autocomplete the function foo, right now it autocompletes it as is, ideally it would autocomplete it as foo().

首先定位 Lua language server 的 autocomplete 实现和现有的 completion 相关设置。比较当前函数名的补全方式与所请求的 foo() 行为，然后确定验证括号插入为可选且适用于函数调用所需的配置和测试。