Fix/wasm compat tract rs

[JulienBalianSonos]

Features

• Gate the cudars/tract-cuda to windows & linux device only
• Gate the use of inventory (and put it in default), with alternative transform discovery so that common wasm bundler like wasm-pack and it's underling wasm-bindgen works.

Side Note

Inventory works in most wasm
If you build a .wasm including tract and load it:

• In Chrome
• In Wasmtime
• In Wasmer
• In WasmEdge

It will 'likely' work, because those engines:

• Grow memory properly
• Have proper stack discipline
• Handle indirect calls correctly

But the wasm-bindgen interpreter is intentionally lightweight and crash on this task (despite being 'broadly' adopted).