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ARROW-8782: [Rust] Add benchmark crate

This PR adds a new crate for benchmarks based on the [New York Taxi and Limousine Commission](https://www1.nyc.gov/site/tlc/about/tlc-trip-record-data.page) data set.

Currently, only DataFusion benchmarks exist, but the plan is to add benchmarks for the arrow, flight, and parquet crates as well.

Example usage:

```bash
cargo run --release -- --iterations 3 --path /mnt/nyctaxi/csv --format csv --batch-size 4096
```

Example output:

```bash
Running benchmarks with the following options: Opt { debug: false, iterations: 3, batch_size: 4096, path: "/mnt/nyctaxi/csv", file_format: "csv" }
Executing 'fare_amt_by_passenger'
Query 'fare_amt_by_passenger' iteration 0 took 7138 ms
Query 'fare_amt_by_passenger' iteration 1 took 7599 ms
Query 'fare_amt_by_passenger' iteration 2 took 7969 ms
```

Follow-up PRs will add additional functionality, such as:

- Storing results in structured files (json perhaps)
- Adding a Dockerfile so that the benchmarks can be run with CPU and RAM constraints

Closes #7205 from andygrove/ARROW-8782

Authored-by: Andy Grove <andygrove73@gmail.com>
Signed-off-by: Wes McKinney <wesm+git@apache.org>