LOOM C-ABI

Bind LOOM into C, C++, Rust, Python (FFI), and more via the C-ABI exports. Headers and examples are in the LOOM repo.

// Build LOOM C-ABI then call:
char* h = Loom_NewNetworkFloat32(layersJson, activationsJson, trainableJson, true, true);
Loom_Call(h, "Forward", inputJson);
char* out = Loom_Call(h, "ExtractOutput", "[]");
Loom_FreeCString(out);
Loom_Free(h);