Add MacBook Pro 13" 2020 i5 2.0GHz 4-core 16GB RAM 512GB SSD

[abeldemoz]

## Checklist

If you have any non-Apple hardware components - submit your results to the Custom Hardware table.

• [ x ] I performed all steps to correctly run XcodeBenchmark.
• [ x ] I used Xcode 12.5 or above.
• [ x ] I attached a screenshot with a compilation time and other fields, example.
• [ x ] I confirm that Time column is still sorted.
• [ x ] The content in cells is centered.

[NachoSoto]

This is a duplicate from #234 (though I got 400s!)