I ported NVIDIA Parakeet (speech-to-text) to ggml: same output as NeMo, faster, GGUF-quantized, no Python

I ported NVIDIA's Parakeet speech-to-text models to pure C++/ggml (the engine behind llama.cpp and whisper.cpp). It runs the FastConformer TDT / CTC / RNNT / hybrid models with no Python and no PyTorch, on CPU and GPU (CUDA, HIP, Vulkan, Metal). The goal was to match NeMo exactly, then make it deplo