Support Virtual Scroll to improve performance

[andyyxw]

When rendering tens of thousands of lines of diff content, it will be very stuck and often out of memory

[MrWangJustToDo]

There are a example for use @git-diff-view/react with react-virtuoso to implement Github like Virtual Scroll, you can check the code on https://github.com/MrWangJustToDo/MrWangJustToDo.io/blob/main/app/src/components/DiffView/DiffContent.tsx#L118

[andyyxw]

There are a example for use @git-diff-view/react with react-virtuoso to implement Github like Virtual Scroll, you can check the code on https://github.com/MrWangJustToDo/MrWangJustToDo.io/blob/main/app/src/components/DiffView/DiffContent.tsx#L118

This demo does not seem to solve the performance problem of git-diff-view, but just uses list rendering of multiple git-diff-view boxes.