Add StructArray and RunArray benchmark tests to with_hashes

[notashes]

Which issue does this PR close?

• Closes Add StructArray and RunArray benchmarks to with_hashes suite in datafusion-common #20181

Rationale for this change

Issue #20152 identifies potential areas for optimization for RunArray and StructArray hashing. But the existing with_hashes benchmark tests don't include coverage for these types.

What changes are included in this PR?

Added benchmarks to with_hashes.rs:

• StructArray: 4-column struct (bool, int32, int64, string)
• RunArray: Int32 run-encoded array
• Both include single/multiple columns and with/without nulls

Are these changes tested?

No additional tests added, but the benchmarks both compile and run.

a sample run:

❯ cargo bench --features=parquet --bench with_hashes -- array
   Compiling datafusion-common v52.1.0 (/Users/notashes/dev/datafusion/datafusion/common)
    Finished `bench` profile [optimized] target(s) in 34.49s
     Running benches/with_hashes.rs (target/release/deps/with_hashes-2f180744d22084f3)
Gnuplot not found, using plotters backend
struct_array: single, no nulls
                        time:   [38.389 µs 38.437 µs 38.485 µs]
Found 5 outliers among 100 measurements (5.00%)
  1 (1.00%) low severe
  2 (2.00%) low mild
  2 (2.00%) high mild

struct_array: single, nulls
                        time:   [46.108 µs 46.197 µs 46.291 µs]
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe

struct_array: multiple, no nulls
                        time:   [114.64 µs 114.79 µs 114.93 µs]
Found 4 outliers among 100 measurements (4.00%)
  1 (1.00%) low severe
  2 (2.00%) low mild
  1 (1.00%) high mild

struct_array: multiple, nulls
                        time:   [138.29 µs 138.62 µs 139.07 µs]
Found 8 outliers among 100 measurements (8.00%)
  1 (1.00%) low severe
  4 (4.00%) low mild
  1 (1.00%) high mild
  2 (2.00%) high severe

run_array_int32: single, no nulls
                        time:   [1.8777 µs 1.9098 µs 1.9457 µs]
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild

run_array_int32: single, nulls
                        time:   [2.0110 µs 2.0417 µs 2.0751 µs]
Found 7 outliers among 100 measurements (7.00%)
  6 (6.00%) high mild
  1 (1.00%) high severe

run_array_int32: multiple, no nulls
                        time:   [5.0511 µs 5.0603 µs 5.0693 µs]
Found 6 outliers among 100 measurements (6.00%)
  1 (1.00%) low mild
  5 (5.00%) high mild

run_array_int32: multiple, nulls
                        time:   [5.6052 µs 5.6201 µs 5.6353 µs]
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe

Are there any user-facing changes?