[C++] Add additional type support for if_else kernel

[asfimport]

Current if_else kernel only supports fixed sized primitive, temporal, boolean, and null types only.

Add the following type support

• Fixed length binary
• Variable length binary

Reporter: Niranda Perera / @nirandaperera
Assignee: Niranda Perera / @nirandaperera

Related issues:

• [C++] An "if_else" kernel to combine two arrays based on a mask (is a child of)
• [C++] Extend type support for if_else kernel (is related to)

PRs and other links:

• GitHub Pull Request #10538

_{Note: This issue was originally created as ARROW-12955. Please see the migration documentation for further details.}

[asfimport]

David Li / @lidavidm:
Issue resolved by pull request 10538
#10538