feat: implement protobuf converter trait to allow control over serialization and deserialization processes (apache#19437)

- Closes apache#18477

This PR adds a new trait for converting to and from Protobuf objects and
Physical expressions and plans.

- Add `PhysicalExtensionProtoCodec` and default implementation.
- Update all methods in the physical encoding/decoding methods to use
this trait.
- Added two examples
- Added unit test

Two examples and round trip unit test are added.

If users are going through the recommended interfaces in the
documentation, `logical_plan_to_bytes` and `logical_plan_from_bytes`
they will have no user facing change. If they are instead calling into
the inner methods `PhysicalPlanNode::try_from_physical_plan` and so on,
then they will need to provide a proto converter. A default
implementation is provided.

---------

Co-authored-by: Adrian Garcia Badaracco <1755071+adriangb@users.noreply.github.com>

Author: 2 people

Cargo.lock

@@ -59,6 +59,7 @@ mimalloc = { version = "0.1", default-features = false }
 object_store = { workspace = true, features = ["aws", "http"] }
 prost = { workspace = true }
 rand = { workspace = true }
+serde = { version = "1", features = ["derive"] }
 serde_json = { workspace = true }
 strum = { workspace = true }
 strum_macros = { workspace = true }