ARROW-11040: [Rust] Simplified builders

[jorgecarleitao]

This PR simplifies the builders code. It has no semantic, execution or API change.

The main idea here is to generalize [Large]ListBuilder, [Large]StringBuilder, [Large]BinaryBuilder as GenericListBuilder, GenericStringBuilder and GenericBinaryBuilder respectively, thereby removing duplicated code.

The relevant changes in this PR are on src/array/builders.rs only.

[github-actions]

https://issues.apache.org/jira/browse/ARROW-11040

[codecov-io]

Codecov Report

Merging #9019 (12a5b20) into master (cd22be6) will increase coverage by 0.05%.
The diff coverage is 95.65%.

@@ Coverage Diff @@## master #9019 +/- ##
==========================================
+ Coverage 82.55% 82.61% +0.05% 
==========================================
Files 203 203 Lines 50043 49942 -101 ==========================================
- Hits 41315 41259 -56 + Misses 8728 8683 -45 

Impacted Files	Coverage Δ
rust/arrow/src/array/array_list.rs	93.10% <ø> (ø)
rust/arrow/src/array/builder.rs	85.89% <93.10%> (+1.89%)	⬆️
rust/arrow/src/array/array_binary.rs	90.54% <100.00%> (-0.07%)	⬇️
rust/arrow/src/array/array_string.rs	90.16% <100.00%> (-0.11%)	⬇️
rust/arrow/src/array/transform/list.rs	83.87% <100.00%> (ø)
rust/arrow/src/array/transform/utils.rs	100.00% <100.00%> (ø)
rust/arrow/src/array/transform/variable_size.rs	100.00% <100.00%> (ø)
rust/arrow/src/compute/kernels/substring.rs	98.29% <100.00%> (ø)
rust/arrow/src/compute/util.rs	98.93% <100.00%> (ø)
rust/arrow/src/json/reader.rs	81.47% <100.00%> (ø)
... and 6 more

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[waynexia]

Nice simplification, I think this is also a good example of how to play with different offset types in a single place 👍

[nevi-me]

Thanks @jorgecarleitao for the simplification

[nevi-me]

I just noticed that we had named this unintuitively, as we're counting the set bits

[jorgecarleitao]

unset? it proves the point, though 🤣

FYI, @nevi-me , the tests are not running (INFRA team deactivated most actions), so we need to be careful with merging to master. There is a thread in the mailing list about it.

[nevi-me]

Okay, thanks for the heads-up. I'll check my emails

[alamb]

The full set of Rust CI tests did not run on this PR :(

Can you please rebase this PR against apache/master to pick up the changes in #9056 so that they do?

I apologize for the inconvenience.