Replace BufferBuilder<u8> with Vec<u8>

[jayzhan211]

Is your feature request related to a problem or challenge?

The functionality we need from BufferBuilder<u8> can be handled by Vec<u8>. Switching to Vec will simplify things, and maybe faster (?

• ArrowBytesMap
• ByteGroupValueBuilder
• regex replace

Describe the solution you'd like

1. Replace with Vec<u8>
2. Run the benchmark to see the performance impact

No response

Describe alternatives you've considered

No response

Additional context

Performance should not downgrade.

Suggested by apache/arrow-rs#6909 (comment)

[poweihuang0817]

take

[alamb]

Thanks @jayzhan211 and @poweihuang0817 -- sounds like a good change

Maybe we can do it as a few PRs (for example, start with ArrowBytesMap) -- that will be faster to review and will ensure once we have the pattern we can easily apply it to the other structures