Add progress bars to RCD construction and deconstruction

[Kotlol]

The one thing I wouldn't like about this is that it would remove the ability to work on multiple tiles at once, which is an incredibly useful QoL thing for the RCD.

I think you still can.
Just like engineering able to do multiplue tool things at a time (with a progress bar ontop)

It's only aesthics to see how long it takes. The bars might overlap eachother like with engineers doing it... but it won't take away multitasking.