grpcio v0.10.0

[BusyJay]

This release update grpc c core to 1.44.0 and headers are support on both server side and client side.

From this release, "secure" feature is renamed to "boringssl" to better explain what library is used under the hook. And different from the past, if "openssl" is enabled and "boringssl" is disable, boringssl-src-rs will not be downloaded anymore, it should help the case where network condition is poor.

Also "use-bindgen" features is removed, now cargo should be able to enable bindgen automatically according to your target platforms.

Following is the changes details:

• Update prost to 0.9.0 (Update prost to 0.8 #544) (*: bump 0.10.0 #559)
• Make CallOption sync (Implement Sync for CallOption #551)
• Update grpc c core to 1.44.0 (*: update grpc c core to 1.41.0 #549) (Update grpc c core to 1.44.0 #558)
• Support querying channelz by API (*: support querying channelz #550)
• Reduce dependency on future crate (Reduce dependency on futures crate #554)
• Support headers on all call types (Server-side metadata for all call types #555)
• Rename features "secure" to "boringssl" (Update grpc c core to 1.44.0 #558)
• Drop dependency on bindgen for both MacOS and x86_64/aarch64 Linux (Update grpc c core to 1.44.0 #558)
• Make health crate not depend on secure feature (Update grpc c core to 1.44.0 #558)

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This discussion was created from the release grpcio v0.10.0.