OTP Application for EMLXAxon.
Eagerly loads the standalone qwen3 compute plugin (c_src/qwen3_plugin.cpp,
built as priv/libemlx_qwen3.so) into emlx's generic native plugin
registry via EMLX.NIF.load_plugin/2. Every EMLX.Native.Qwen3.* NIF
errors with {:error, _} until this has run — since :emlx is a
dependency of :emlx_axon, OTP starts it first, so EMLX.NIF.load_plugin/2
is always available by the time this runs.