[Minor] Support MistralModel and MistralForCausalLM

[jiudingsun01]

Description

adding modelcard and mapping (type_to_module and type_to_dimension) for Mistral and MistralForCausalLM

Testing Done

Tested on my own code; worked perfectly.

Checklist:

• [check] My PR title strictly follows the format: [Your Priority] Your Title
• [ ] I have attached the testing log above
• [check] I provide enough comments to my code
• [check] I have changed documentations
• [ ] I have added tests for my changes