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ARROW-10572: [Rust][DataFusion] Use aHash instead of FnvHashMap

Use ahash https://github.com/tkaitchuck/aHash for hashing algorithm.

Difference is mainly visible in group_by benches:

```
aggregate_query_group_by 15 12
                        time:   [2.0644 ms 2.0869 ms 2.1100 ms]
                        change: [-5.4843% -4.1892% -2.8525%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 2 outliers among 100 measurements (2.00%)
  2 (2.00%) high mild

Benchmarking aggregate_query_group_by_with_filter 15 12: Warming up for 3.0000 s
Warning: Unable to complete 100 samples in 5.0s. You may wish to increase target time to 9.6s, enable flat sampling, or reduce sample count to 50.
aggregate_query_group_by_with_filter 15 12
                        time:   [1.8875 ms 1.9006 ms 1.9140 ms]
                        change: [-9.8182% -8.4717% -7.1023%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
  1 (1.00%) high mild
  4 (4.00%) high severe
```

Closes #8654 from Dandandan/ahash

Authored-by: Heres, Daniel <danielheres@gmail.com>
Signed-off-by: Andrew Lamb <andrew@nerdnetworks.org>