arrow

GH-35417: [GLib] Add GArrowRunEndEncodedDataType (#36444)

### Rationale for this change

`arrow::RunEndEncodedType` is available since Apache Arrow C++ 12. Apache Arrow GLib should support it.

### What changes are included in this PR?

Add `GArrowRunEndEncodedDataType` as the binding of `arrow::RunEndEncodedType`.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

Yes.
* Closes: #35417

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>