GH-37937: [C++][FlightRPC] Investigate using gRPC's generic API using gRPC's BidiReactor#49339

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raulcd wants to merge 7 commits intoapache:mainfrom

raulcd:raulcd-async-flight-poc

Commits on Mar 13, 2026

PoC adding DoGet and DoPut using BidiReactor from gRPCs Async generic API
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Some CMake requirements. I've fixed some things that are only required locally
raulcd
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Use RecordBatchStream->Next on PoC instead of manually building messages. Build new PayloadData::SerializeToBuffers method to retrieve list of arrow::buffers from a PayloadData. This function inter…
raulcd
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Decopule deserealization logic from ::grpc::ByteBuffer and work directly with arrow::Buffer and FlightData
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Initial attempt to implement a FlightMessageDecoder push based implementation that consumes arrow::buffers and triggers calls to a user built listener once RecordBatch has been read
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Remove unnecessarily exposing DeserializeFlightData
raulcd
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Remove unnecessarily exporting serialization_internal symbol
raulcd
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