Improve performance of set_bits

[viirya]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

When profiling a project using arrow-rs, found that set_bits is among one of heavy stack trace:

arrow::compute::kernels::filter::filter_array::h86b56436bac43c26	
arrow::compute::kernels::filter::filter_dict::hb507a878026da337	
arrow::compute::kernels::filter::filter_primitive::he8bd6ecc432914a3	
arrow::compute::kernels::filter::filter_null_mask::h4636cf4ec7ac3797	
arrow::compute::kernels::filter::filter_bits::hba752c56f552d45f	
arrow::array::builder::boolean_buffer_builder::BooleanBufferBuilder::append_packed_range::hd58d43f1c7f97d22	
arrow::util::bit_mask::set_bits::hdf6751951c8784f2	

It's good if we can improve it.

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[tustvold]

It might be possible to rework the algorithm to use UnalignedBitChunkIterator instead, which may perform better

[viirya]

Thanks @tustvold. I will take a look on UnalignedBitChunkIterator too.