* fix: move tab scroll buttons to remove spacing before 1st tab
* fix: always show tab scroll buttons
* fix: cleanup code, get scroll button rect for correct button
* fix: expand to full size for tabs if scroll buttons arent visible
* fix: define n as visible tabs number
* feat: alert user via nagview if file cannot be saved
it will prompt the user to choose whether they
want to save to another location and perform
the save as command
* refactor: change defer draw call to thread
* feat: log error when attempting to save doc