fixes #7999 (adds control vectors to all `build_XXX()` functions in `llama.cpp` [needs testing] (#8060)

* fixes #7999

The `build_command_r` forgot to add the control vector.

* Fixes qwen2 too

* Fixed all models' control vectors

* Removed double calls to `cb(cur, "l_out", il)`

* Moved control vector logic to llama_control_vector:apply_to()