Feature - Link libtorch libraries at runtime

[rahulchaphalkar]

Currently, the 2 ways to link libtorch*.so files is static or dynamic. For dynamic, libtorch needs to be installed on the system where tch-rs is being built. I am exploring a feature where libtorch*.so would not need to be present while tch-rs is built, and only the target system where tch-rs is being run needs to have those libraries installed.
This would make projects (like wasmtime) which depend on tch-rs be able to build without libtorch being installed. The actual linking/mapping of symbols would happen at runtime.
This is similar to what openvino-rs does in runtime linking, although the way to do it would differ here since the bindings are generated in 2 levels, as mentioned in this issue.
Let me know if this feature would be useful, and any feedback. Thanks.