Acquire Model Weights & Tokenizer #172

Use the official BitNet resources to download the BitNet b1.58‑2B 4T model files. Specifically, obtain the packed 1.58-bit quantized weight file (e.g. from the Hugging Face repo microsoft/bitnet-b1.58-2B-4T) and the accompanying tokenizer data
medium.com.

Plan to embed these files into the Go application (using Go’s embed or by converting them into Go source constants) so that the model weights and tokenizer are available at runtime without external dependencies
medium.com.