Modifying nuklear.h and scrollbars stop working.

So I modified Nuklear to have two scrollbar flags: NK_WINDOW_NO_VSCROLLBAR and NK_WINDOW_NO_HSCROLLBAR.
What is modified is anything that referenced the flag "NK_WINDOW_NO_SCROLLBAR" except when it was just using the flag (I reimplemented this to be both flags).

Another modification: Only to tooltips. They now are away from the mouse and at least when I use my tooltips it checks for the end of the screen and offsets it accordingly.

Start by reviewing the reported changes to nuklear.h, especially replacements of NK_WINDOW_NO_SCROLLBAR with NK_WINDOW_NO_VSCROLLBAR and NK_WINDOW_NO_HSCROLLBAR. Reproduce the scrollbar failure with those flags and separately inspect the tooltip positioning change; done means scrollbars work correctly while the intended tooltip offsets remain intact.

Written by the indexing model from the issue text.