[C++] Support using Array::View from compatible dictionary type to another

[asfimport]

For example, zero-copy conversion from dictionary(int32(), binary()) to dictionary(int32(), utf8()). The implementation must remember to call View on ArrayData::dictionary

Reporter: Wes McKinney / @wesm
Assignee: Wes McKinney / @wesm

Related issues:

• [C++] Read Parquet dictionary encoded ColumnChunks directly into an Arrow DictionaryArray (relates to)

PRs and other links:

• GitHub Pull Request #5129

_{Note: This issue was originally created as ARROW-6049. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 5129
#5129