`o3` and `o3-mini` support for tokenizer

**Is your feature request related to a problem? Please describe.**
Related to https://github.com/openai/tiktoken/issues/374

**Describe the solution you'd like**
`TiktokenTokenizer.CreateForModel` support for new models

**Describe alternatives you've considered**
Configure encoding and tokenizer manually.

**Additional context**
-