[C++] Restore apache-arrow Homebrew recipe and define process for maintaining and updating for releases

[asfimport]

As far as I know, the Apache Arrow community has not been maintaining

https://github.com/Homebrew/homebrew-core/blob/9a4c569e7c6e63cb1171c2b2f209de2108a39eb7/Formula/apache-arrow.rb

It was just dropped from Homebrew for lack of maintenance. Some installation targets may depend on Arrow from Homebrew, so we should include updating Homebrew in our release management process

Reporter: Wes McKinney / @wesm
Assignee: Kouhei Sutou / @kou

Related issues:

• Re-enable homebrew formula (is duplicated by)
• [R] Enable package to be made available on CRAN (is depended upon by)

_{Note: This issue was originally created as ARROW-4300. Please see the migration documentation for further details.}

[asfimport]

Kouhei Sutou / @kou:
I've opened a pull request: Homebrew/homebrew-core#36768

[asfimport]

Kouhei Sutou / @kou:
It has been merged.