Copying object/bone constraints should also copy their drivers

At this moment, if you copy an object or bone constraint containing drivers, the drivers will not get copied.

Steps to reproduce:

1. Create two objects or an armature with two bones
2. Add a constraint to one of the objects/bones
3. Add a driver to any property of that object/bone
4. Copy the constraint to the second object/bone

Current result: The second object/bone does not have any drivers.

Expected result: The second object/bone should have drivers.

Impact: When you need to copy constraints with drivers to a huge number of objects or bones, this issue forces you to copy them manually, one by one, resulting in a significant waste of time.

Video commentary: The video shows the bug/lack of feature by reproducing the steps listed above, both for an object and armature bones. You can see there that whenever a constraint is copied, the driver is not, and you can tell that by the property slider/button color remaining blue.