View: Added ViewLinesHeight()

 * This might be usefull for people who want to check that

See jesseduffield@e030e03

Co-authored-by: Jesse Duffield <jessedduffield@gmail.com>
Signed-off-by: Glenn Vriesman <glenn.vriesman@gmail.com>

view.go

@@ -635,10 +635,16 @@ func (v *View) ViewBufferLines() []string {
 	return lines
 }
 
+// LinesHeight is the count of view lines (i.e. lines excluding wrapping)
 func (v *View) LinesHeight() int {
 	return len(v.lines)
 }
 
+// ViewLinesHeight is the count of view lines (i.e. lines including wrapping)
+func (v *View) ViewLinesHeight() int {
+	return len(v.viewLines)
+}
+
 // ViewBuffer returns a string with the contents of the view's buffer that is
 // shown to the user.
 func (v *View) ViewBuffer() string {