Add model compatibility tests

[thisisiron]

Description

Implement comprehensive testing for all supported Vision Language Models to ensure consistent behavior.

To Do List

• Test all officially supported models (Qwen2.5-VL, InternVL3, ...)
• Verify token calculation consistency across models

Test Cases to Implement

1. Token Calculation Consistency
   • Same image should produce consistent results with same model
   • Test chat template application

[thisisiron]

Replaced with verifying consistency between transformers and vt-calc token counts.