ASV Benchmark for read_excel

[WillAyd]

Right now we don't benchmark performance of read_excel across the various engines (xlrd, openpyxl and odfpy) so would gladly accept contributions to improve benchmark coverage on those

[sameshl]

@WillAyd I would like to work on this.
Correct me if I am wrong but aren't we doing exactly that by seeing this code ?

[WillAyd]

We don't actually parametrize read_excel in those benchmarks so they run continuously for xlrd. Need to leverage the parametrization by at a minimum doing engine=engine in the read_excel test, but then also may need to account for the various file formats

[f6v]

@WillAyd could you take a look at the PR please?