add table based output using tabulate

[phueper]

I find that somewhat easier to compare stats for multiple models:

output looks like this then:

Evaluating models: ['llama3:latest', 'gemma3:4b']

Table stats:
| Model         |            Prompt |   Evaluation |   Total |   Load Time |             Prompt |            Prompt |   Evalutaion |   Evaluation |   Total Time |
| Name          |   Evaluation Rate |         Rate |    Rate |         (s) |   Evaluation Count |   Evaluation Time |        Count |         Time |          (s) |
|               |             (T/s) |        (T/s) |   (T/s) |             |                    |               (s) |              |          (s) |              |
|---------------+-------------------+--------------+---------+-------------+--------------------+-------------------+--------------+--------------+--------------|
| llama3:latest |            413.58 |        45.55 |   48.41 |        1.14 |                 33 |              0.08 |          463 |        10.17 |        11.56 |
| gemma3:4b     |            468.31 |        64.62 |   66.06 |        1.92 |                 31 |              0.07 |         1190 |        18.42 |        20.72 |