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ARROW-10703: [Rust] [DataFusion] Compute build-side of hash join once

This simply introduces a mutex so that the left-side is computed once and then re-used.

I partitioned the TPC-H SF=1 data set so that the order table had 2 partitions and the lineitem had 8 partitions. I confirmed that the build-side only got built once by adding debug logging.

I ran query 12 with master and this PR.

Benchmark results from master branch:

```
Query 12 iteration 0 took 856.2 ms
Query 12 iteration 1 took 577.5 ms
Query 12 iteration 2 took 579.7 ms
Query 12 iteration 3 took 562.9 ms
Query 12 iteration 4 took 590.9 ms
Query 12 avg time: 633.44 ms
```

Benchmark results from this PR:

```
Query 12 iteration 0 took 307.6 ms
Query 12 iteration 1 took 296.8 ms
Query 12 iteration 2 took 307.4 ms
Query 12 iteration 3 took 304.5 ms
Query 12 iteration 4 took 318.5 ms
Query 12 avg time: 306.95 ms
```

Performance is very close to 2x and that was the expected outcome since the build-side got built once instead of twice.

Closes #8981 from andygrove/join-compute-build-side-once

Authored-by: Andy Grove <andygrove73@gmail.com>
Signed-off-by: Andrew Lamb <andrew@nerdnetworks.org>