Prototyping a rust wasm-bpf runtime based on wasmtime

[yunwei37]

We need to prototype a runtime based on wasmtime because:

• rust may be safer than C/cpp, and cargo may be a better package manage approach and build systems than git submodule/cmake
• We are not very familiar with cmake...
• wasmtime has a better support on component modal and better ecosystem

The current version wamr runtime may still remain, for a more lightweight usecases and better support with libbpf (C/C++ library).

The rust library to load and operate eBPF programs can be aya-rs.

Any suggestions?

[yunwei37]

A test implement of wasmtime component model is in https://github.com/eunomia-bpf/wasmtime-test, and the problem related is recorded in bytecodealliance/wasmtime#5775

[Officeyutong]

Already solved https://github.com/eunomia-bpf/wasm-bpf/tree/main/runtime/rust