Rust FFI port for AMPS message queue client

Supporting basic functionality with Rust FFI port.

build

• build a static library of AMPS C/C++ client without name mangling (a.k.a. doing extern "C") on amps.h and put into ./rust_amps/src/ directory
• invoke run.sh for rustc manual build, or
• cargo build/run (check build.rs for more details)

compatability

developed on rustc 1.78.0 (9b00956e5 2024-04-29)

Simple publish stress test on 16byte messages:

TODOs

Rust native implementation!