FEAT: support SeaLLMs - Large Language Models for Southeast Asia

[elepherai]

SeaLLMs/SeaLLM-7B-v2: The most siginificant upgrade since SeaLLM-13B with half the size, outperforming performance across diverse multilingual tasks, from world knowledge, math reasoning, instruction following, etc.
SeaLLMs/SeaLLM-13B-Chat: A chatbot optimized for Vietnamese 🇻🇳, Indonesian 🇮🇩, Thai 🇹🇭, Malay 🇲🇾, Khmer🇰🇭, Lao🇱🇦, Tagalog🇵🇭 and Burmese🇲🇲.

[qinxuye]

Thanks, we will do some investigation first, we hope we can support it ASAP.