Feature Request: hide specifc files or folders in the file tree

[ShimuGuyue]

This is a very important function, and it is to hide specific files or folders in the file tree, such as "**/*.assets".

When we add so many markdown files and folders corresponding to them one by one, the file tree will be ugly, especially the folders will be displayed in above the files.

隐藏文件树中的特定文件或文件夹，这是一个非常重要的功能，例如“**/*.essets”。

当我们添加大量的 markdown 文件和与之对应的文件夹时，文件树会很难看，尤其是文件夹会显示在文件上方。