1.634 Update - mirror tool and copy-paste fixes

- Added mirror tool to edit mode. After toggling on, click an edge to set the mirror plane and press move or copy. Mirroring stairs isn't ideal, it would need to mirror the actual mesh for it to be perfect. Doesn't include wiring so using this will disconnect anything in the selection.

- Vending machines will now accept storage monitors and it's placement block collider is smaller.

- Fixed doors and frame parts being flipped with copy-paste saves in Rust.

- Fixed copy-paste saved grills not being connected to sockets in Rust.

- Fixed an overflow crash with some complicated circuits with counters.

Patched in last week:

- Added telephone, elevators always use 5 power and car lift cost and power updated.