Lazily materialize the null buffer builder of boolean builder

[HaoYang670]

Signed-off-by: remzi 13716567376yh@gmail.com

Which issue does this PR close?

Closes #2058 .

Rationale for this change

Improve the performance when there is no null in the array.

Benchmark result

Tested on M1 Pro Mac

bench_bool/bench_bool   time:   [664.02 us 683.00 us 705.62 us]                                  
                        thrpt:  [708.60 MiB/s 732.06 MiB/s 752.99 MiB/s]
                 change:
                        time:   [-66.725% -66.281% -65.716%] (p = 0.00 < 0.05)
                        thrpt:  [+191.68% +196.57% +200.52%]
                        Performance has improved.
Found 20 outliers among 100 measurements (20.00%)
  1 (1.00%) low severe
  2 (2.00%) low mild
  1 (1.00%) high mild
  16 (16.00%) high severe

What changes are included in this PR?

Lazily materialize the null buffer builder, just as what we have done in the primitive builder.

Are there any user-facing changes?

No.

[codecov-commenter]

Codecov Report

Merging #2073 (4f06db3) into master (86543a4) will increase coverage by 0.00%.
The diff coverage is 93.61%.

@@           Coverage Diff           @@
##           master    #2073   +/-   ##
=======================================
  Coverage   83.61%   83.62%           
=======================================
  Files         223      223           
  Lines       58539    58559   +20     
=======================================
+ Hits        48947    48969   +22     
+ Misses       9592     9590    -2     

Impacted Files	Coverage Δ
arrow/src/array/builder/primitive_builder.rs	92.57% <ø> (-0.55%)	⬇️
arrow/src/array/builder/boolean_builder.rs	87.25% <93.61%> (+11.49%)	⬆️
...row/src/array/builder/string_dictionary_builder.rs	90.64% <0.00%> (-0.72%)	⬇️
parquet/src/encodings/encoding.rs	93.43% <0.00%> (-0.20%)	⬇️
arrow/src/datatypes/datatype.rs	64.41% <0.00%> (+0.35%)	⬆️

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[ursabot]

Benchmark runs are scheduled for baseline = 474dc14 and contender = 7fff23f. 7fff23f 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

[HaoYang670]

Thank you @tustvold for your review!