This adds file operation command to emacs so you can quickly rename and copy
files.
The problem with the normal copy file if that it misses removing the old buffer
if its a rename and dose not move to the new buffer. This leads to (more than I
like to admit) editing the new file thinking its the old file.
By updating the buffers and automatically switching this prevents this.
The current keybinding was set to kill the buffer that was causing an
issue when there was a spit of the same buffers and you wanted to
close one. If your were in this situation them the buffer would be
deleted and both of the windows would close. This is not what I want
from the "delete window" command, the expected behaviour is to close
the one window and leave the other window. This is what
`evil-window-delete` dose. This prevents the buffer from getting
deleted and if it is the last buffer emacs would then close.
