clip : refactor graph builder (#13321)
* mtmd : refactor graph builder
* fix qwen2vl
* clean up siglip cgraph
* pixtral migrated
* move minicpmv to a dedicated build function
* move max_feature_layer to build_llava
* use build_attn for minicpm resampler
* fix windows build
* add comment for batch_size
* also support tinygemma3 test model
* qwen2vl does not use RMS norm
* fix qwen2vl norm (2)
