Extension to view all files from a folder in a single tab?

I was just thinking that sometimes I avoid breaking functions in a file into multiple modules because I don't want to deal with the hassle of switching files. One way to remove that hassle would be to have a way to view all the files in a folder in a single tab with each file appended to the list, so I could scroll through or search all of them in the same tab.

Does VS Code already have an extension like this? If not, is the VS Code extension system flexible enough to implement this feature?