[love-api] many callback functions are missing

還沒有人認領這個 Issue。

These functions are undefined:

- [love.load](https://www.love2d.org/wiki/love.load)
- [love.quit](https://www.love2d.org/wiki/love.quit)
- [love.errorhandler](https://www.love2d.org/wiki/love.errorhandler)
- [love.lowmemory](https://www.love2d.org/wiki/love.lowmemory)
- [love.threaderror](https://www.love2d.org/wiki/love.threaderror)
- [love.keyreleased](https://www.love2d.org/wiki/love.keyreleased)
- [love.textedited](https://www.love2d.org/wiki/love.textedited)
- [love.textinput](https://www.love2d.org/wiki/love.textinput)
- [other](https://www.love2d.org/wiki/love) `mouse`, `joystick` and `touch` related...

I really don't understand why the api [has all these aliases](https://github.com/sumneko/lua-language-server/blob/master/meta/3rd/love2d/library/love.lua), but in vscode these functions appear as undefined 🤷.

Maybe `@alias` is a wrong way to define class fields or is the total number of possible class fields limited?

For some reason, some of them show up, but most do not!

首先檢查 meta/3rd/love2d/library/love.lua，並將其中的別名與 VS Code 中顯示為未定義的所列 LÖVE 回呼進行比較。為 love.load、love.quit 和 love.textinput 等回呼重現缺少的提示，然後追蹤這些定義是如何公開的。當所列的回呼函式不再被回報為未定義時，即表示完成。

由索引模型根據 Issue 內容生成。