Faster BooleanBufferBuilder::append_n for true values

[tustvold]

Which issue does this PR close?

Closes #.

Rationale for this change

Inspired by #1603. The performance benefits are clearly visible when decoding nullable primitive values from parquet, where it yields a non-trivial speedup

arrow_array_reader/Int64Array/binary packed, mandatory, no NULLs
                        time:   [17.706 µs 17.711 µs 17.718 µs]
                        change: [+6.7854% +6.8707% +6.9525%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 6 outliers among 100 measurements (6.00%)
  6 (6.00%) high mild
arrow_array_reader/Int64Array/binary packed, optional, no NULLs
                        time:   [18.660 µs 18.678 µs 18.710 µs]
                        change: [-37.996% -37.947% -37.880%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe
arrow_array_reader/Int64Array/binary packed skip, mandatory, no NULLs
                        time:   [16.585 µs 16.595 µs 16.608 µs]
                        change: [+5.0752% +5.1957% +5.3004%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 6 outliers among 100 measurements (6.00%)
  3 (3.00%) high mild
  3 (3.00%) high severe
arrow_array_reader/Int64Array/binary packed skip, optional, no NULLs
                        time:   [17.200 µs 17.207 µs 17.214 µs]
                        change: [-27.663% -27.598% -27.528%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 6 outliers among 100 measurements (6.00%)
  4 (4.00%) high mild
  2 (2.00%) high severe
arrow_array_reader/Int64Array/binary packed, optional, half NULLs
                        time:   [29.343 µs 29.349 µs 29.356 µs]
                        change: [+4.4487% +4.5826% +4.6903%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 12 outliers among 100 measurements (12.00%)
  7 (7.00%) high mild
  5 (5.00%) high severe

Note the regressions are just noise, they fluctuate by ~8%.

What changes are included in this PR?

Are there any user-facing changes?

No

[Dandandan]

Nice 🎉

[ursabot]

Benchmark runs are scheduled for baseline = b35e179 and contender = 025ffd0. 025ffd0 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java