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GH-43802: [GLib] Add `GAFlightRecordBatchWriter` (#43803)

### Rationale for this change

This is needed to implement `DoPut`.

### What changes are included in this PR?

We can't add tests for it because it's an abstract class.

I'm not sure `is_owner` is needed like
`GAFlightRecordBatchReader`. `is_owner` may be removed later if we find that it's needless.

### Are these changes tested?

No.

### Are there any user-facing changes?

Yes.

`GAFlightRecordBatchWriter` is a new public API.
* GitHub Issue: #43802

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