Adding `safetensors` variant of this model (#1)

docs: mention tokenizer fixes

fix: apply tokenizer fixes (taken from my ModernBERT repo: https://huggingface.co/stefan-it/ModernBERT-large-tokenizer-fix/blob/main/tokenizer_config.json)

feat: import original files from main (7662476d60abb071a5bd319c9f3074f3072c062d)

initial commit