Include integration tests in arrow crate

[alamb]

Which issue does this PR close?

re #3118

Rationale for this change

When I published version 27, I got

error: failed to verify package tarball

Caused by:
  failed to parse manifest at `/Users/alamb/Downloads/apache-arrow-rs-27.0.0/arrow/target/package/arrow-27.0.0/Cargo.toml`

Caused by:
can't find `ipc` test at `tests/ipc.rs` or `tests/ipc/main.rs`. Please specify test.path if you want to use a non-default path.



error: failed to verify package tarball

Caused by:
  failed to parse manifest at `/Users/alamb/Downloads/apache-arrow-rs-27.0.0/arrow/target/package/arrow-27.0.0/Cargo.toml`

Caused by:
can't find `csv` test at `tests/csv.rs` or `tests/csv/main.rs`. Please specify test.path if you want to use a non-default path.

I had to delete some entries in the Cargo.toml fil.

What changes are included in this PR?

Include tests directory in the list of files to publish as suggested by @tustvold at #3112 (comment)

Testing

You can see the failure by checking out 27.0.0 and running cargo publish --dry-run:

(arrow_dev) alamb@MacBook-Pro-8:~/Software/arrow-rs/arrow$ cargo publish --dry-run
    Updating crates.io index
   Packaging arrow v27.0.0 (/Users/alamb/Software/arrow-rs/arrow)
   Verifying arrow v27.0.0 (/Users/alamb/Software/arrow-rs/arrow)
error: failed to verify package tarball

Caused by:
  failed to parse manifest at `/Users/alamb/Software/arrow-rs/target/package/arrow-27.0.0/Cargo.toml`

Caused by:
  can't find `ipc` test at `tests/ipc.rs` or `tests/ipc/main.rs`. Please specify test.path if you want to use a non-default path.

With this patch:

(arrow_dev) alamb@MacBook-Pro-8:~/Software/arrow-rs/arrow$ git cherry-pick  a082f96
Auto-merging arrow/Cargo.toml
[detached HEAD 94083a282] Include integration tests in arrow crate
 Date: Fri Nov 25 14:29:08 2022 -0500
 1 file changed, 1 insertion(+)
(arrow_dev) alamb@MacBook-Pro-8:~/Software/arrow-rs/arrow$ cargo publish --dry-run
    Updating crates.io index
....
ow-27.0.0)
    Finished dev [unoptimized + debuginfo] target(s) in 17.93s
   Uploading arrow v27.0.0 (/Users/alamb/Software/arrow-rs/arrow)
warning: aborting upload due to dry run

Are there any user-facing changes?

No

[ursabot]

Benchmark runs are scheduled for baseline = ddaab1d and contender = fd08c31. fd08c31 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