Update model definitions and pricing in models.json

- Changed model names for clarity and consistency.
- Added capabilities for AQA and Embedding models, including streaming and batch processing.
- Updated pricing structure for various models, reducing input and output costs.
- Introduced new models for AQA and Embedding with detailed specifications.
- Removed deprecated batch capabilities from several models.
- Adjusted context windows and output token limits for specific models.

Author: crmne