[Feature request] toggle_stage command could move to the next file before staging to avoid losing order #354

Currently, when you stage a file, the focus moves along with the file, making the next file be unpredictable.

The request is to move to the next unstaged file, if any, to avoid losing the flow and make the next file predictable.

Example:

changes (3)
file-a.txt
file-b.txt (cursor here)
fil-c.txt

If I stage file-b, the focus should move to file-c;

changes (2)
file-a.txt
file-c.txt (cursor is here and the current diff also)

staged changes (1)
file-b.txt

Otherwise, you have to hit ]f (next_file) multiple times to reach the "next file"

Thank you.