GH-35489: [MATLAB] Add CMake build directory to MATLAB .gitignore

[kevingurney]

Rationale for this change

A typical name that is used for the build folder when building CMake projects is build.

The documentation for building the MATLAB interface mentions using build as the build directory name. It would be helpful if build/ was added to the MATLAB interface .gitignore so that the build directory doesn't show up in the list of untracked files with git.

What changes are included in this PR?

Added build to the MATLAB .gitignore.

Are these changes tested?

Manually verified on Debian 11 that the build folder doesn't show up as untracked with git.

Are there any user-facing changes?

No.

• Closes: [MATLAB] Add CMake build directory to MATLAB .gitignore #35489

[github-actions]

Thanks for opening a pull request!

If this is not a minor PR. Could you open an issue for this pull request on GitHub? https://github.com/apache/arrow/issues/new/choose

Opening GitHub issues ahead of time contributes to the Openness of the Apache Arrow project.

Then could you also rename the pull request title in the following format?

GH-${GITHUB_ISSUE_ID}: [${COMPONENT}] ${SUMMARY}

or

MINOR: [${COMPONENT}] ${SUMMARY}

In the case of PARQUET issues on JIRA the title also supports:

PARQUET-${JIRA_ISSUE_ID}: [${COMPONENT}] ${SUMMARY}

See also:

• Other pull requests
• Contribution Guidelines - How to contribute patches

[github-actions]

• Closes: [MATLAB] Add CMake build directory to MATLAB .gitignore #35489

[kou]

+1

[ursabot]

Benchmark runs are scheduled for baseline = 5b8eb64 and contender = ad43544. ad43544 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Failed ⬇️2.22% ⬆️0.0%] test-mac-arm
[Finished ⬇️0.0% ⬆️0.0%] ursa-i9-9960x
[Failed ⬇️2.86% ⬆️0.0%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] ad43544e ec2-t3-xlarge-us-east-2
[Failed] ad43544e test-mac-arm
[Finished] ad43544e ursa-i9-9960x
[Failed] ad43544e ursa-thinkcentre-m75q
[Finished] 5b8eb647 ec2-t3-xlarge-us-east-2
[Failed] 5b8eb647 test-mac-arm
[Finished] 5b8eb647 ursa-i9-9960x
[Failed] 5b8eb647 ursa-thinkcentre-m75q
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

[ursabot]

['Python', 'R'] benchmarks have high level of regressions.
test-mac-arm