[C++][Compute] Implement SelectKStable

PR https://github.com/apache/arrow/pull/11019 implements SelectKUnstable.

Some previous result of SelectKUnstable using StableHeap is shown here: https://github.com/apache/arrow/pull/11019#issuecomment-913977337 

So, implementation of SelectKStable   should explore how to implement this algorithm using StablePartition + stable_sorting.

Final note: As mentioned here: https://github.com/apache/arrow/pull/11019#discussion_r706231044 

.e. instead of select_k_options.is_top_k() have 1) a check that there are sort keys and then 2) check select_k_options.sort_keys[0].order == Descending instead, inside the function definition.
1