[C++] Expand SumKernel benchmark to more types

[asfimport]

Expand SumKernel benchmark to cover more types, Float, Double, Int8, Int16, Int32, Int64.

Currently it only has Int64 item, useful for further optimize job.

Reporter: Frank Du / @JianXinD
Assignee: Frank Du / @JianXinD

Related issues:

• [C++] C++ array kernels framework and execution buildout (umbrella issue) (relates to)

PRs and other links:

• GitHub Pull Request #7267

_{Note: This issue was originally created as ARROW-8772. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
Please be cautious about patches to src/arrow/compute if you would please since I am heavily refactoring / reorganizing the whole directory

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 7267
#7267