[feature] Improve Move symbol by using Custom QuickPick which will not load all symbols.

Today the Move symbol refactor operation load all types in the project. If the project is large, it takes a lot of time to load the items and its overwhelming to select from.

A suggestion is to use https://code.visualstudio.com/api/references/vscode-api#QuickPick%3CT%3E so that we can start loading the types which are in the same package to start with, and then when user start typing we can use that as a query parameter and load more items with a de-bounce.

This will give much better user experience and fast response.

从 Move symbol 重构操作开始，并查看 issue 中链接的 VS Code QuickPick API。该更改应避免初始加载所有类型，先从同一 package 中的类型开始，并在用户输入时通过 debouncing 查询其他项目。