Show total elapsed time in STATE COMPRESSION job progress

Currently, the STATE COMPRESSION job progress output includes messages such as approximation quality, fine-tuning completion, and CNOT count reduction. However, it does not display how long the job took to run.

Feature request
Add a final line showing the total elapsed time (wall-clock time) for the compression job. For example:

Total elapsed time: 32.4 seconds

Why this matters

• Helps users estimate computational cost.

• Makes it easier to compare performance across circuits or approximation levels.

• Improves transparency and usability.