Add Parakeet-based streaming STT (Nemotron ASR Streaming 0.6B) #1558

Problem description

Streaming STT relies on our Whisper chunking.

Proposed solution

Add a Parakeet-based streaming model:

• nvidia/nemotron-3.5-asr-streaming-0.6b
• nvidia/nemotron-speech-streaming-en-0.6b
• ~2-bit variants: moondream/parakeet-redux (25 languages, 178 MB), FermionResearch/Phonon-2 (EN, 164 MB)

Benefits to React Native ExecuTorch

Native streaming STT.