### Description
This PR gets the onnxruntime Rust bindings to a foundation where they
can be extended and validated as the onnxruntime progresses.
Specifically, the PR does the following.
- fixes some of the existing compilation issues due to missing some
enums output tensor data types.
- introduces a `just vendor` task that will vendor the source code from
the onnxruntime to enable a common base directory within the crate
directory rather than using a relative parent path. This enables `crate
package` to be able to archive the onnxruntime native code, which will
enable consumers of the onnxruntime-sys crate to be able to compile on
their target.
- introduces a GH action to lint the Rust code (rustfmt, clippy), build
the library, validate through tests, and validate crate can package
correctly.
TODOs:
- [x] This PR is based on #18200 and will need to be rebased once that
PR is merged.
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
This is the first step to getting new onnxruntime Rust crates published
through this project, which will unblock community Rust projects which
would like to take a dependency on onnxruntime Rust.
Follow up work to enable publication of onnxruntime Rust crates:
- change name of the crates to be published (onnxruntime-rs and
onnxruntime-sys are already taken and we'll need new names)
- update authors / license to reflect contributions from previous
maintainer(s) and new maintainers
- introduce a crate publish GH action or ADO pipeline
---------
Signed-off-by: David Justice <david@devigned.com>
This adds updated Rust bindings that have been located at
[nbigaouette/onnxruntime-rs](https://github.com/nbigaouette/onnxruntime-rs).
check out the build instructions included in this PR at /rust/BUILD.md.
Changes to the bindings included in this PR:
- The bindings are generated with the build script on each build
- The onnxruntime shared library is built with ORT_RUST_STRATEGY=compile
which is now the default.
- A memory leak was fixed where a call to free wasn't called
- Several small memory errors were fixed
- Session is Send but not Sync, Environment is Send + Sync
- Inputs and Outputs can be ndarray::Arrays of many different types.
Some commits can be squashed, if wanted, but were left unsquashed to
show differences between old bindings and new bindings.
This PR does not cover packaging nor does it include the Rust bindings
withing the build system.
For those of you who have previous Rust code based on the bindings,
these new bindings
can be used as a `path` dependency or a `git` dependency (though I have
not tested this out).
The work addressed in this PR was discussed in #11992
