Added animations to issue boards
What does this MR do?
Animates all the things on issue boards!
- Animates the opening & closing of the sidebar
- also animates the
scrollLeft
of the boards list if the issue isn't fully visible
- also animates the
- Animates dragging lists around
- Animates dragging issue cards around
Screenshots (if relevant)
What are the relevant issue numbers?
Closes #25630 (closed)