llama: automatically set parameters not set by the user in such a way that maximizes GPU utilization (#16653)

* llama: automatically fit args to free memory

llama-fit-params tool

* fix CI

* hints for bug reports, ensure no reallocation

* fix segfault with Vulkan

* add llama-fit-params to CI

* fix CI

* fix CI

* fix CI

* minor adjustments

* fix assignment of 1 dense layer

* fix logger not being reset on model load failure

* remove --n-gpu-layer hint on model load failure

* fix llama-fit-params verbosity

* fix edge case

* fix typo [no ci]

tools/CMakeLists.txt

@@ -37,4 +37,5 @@ else()
         add_subdirectory(cvector-generator)
         add_subdirectory(export-lora)
     endif()
+    add_subdirectory(fit-params)
 endif()