app : add batched-bench, fit-params, quantize & perplexity (#23459)

* app : add batched-bench, fit-params, quantize & perplexity

Signed-off-by: Adrien Gallouët <angt@huggingface.co>

* Add missing main.cpp

Signed-off-by: Adrien Gallouët <angt@huggingface.co>

* Add EOL

Signed-off-by: Adrien Gallouët <angt@huggingface.co>

---------

Signed-off-by: Adrien Gallouët <angt@huggingface.co>

tools/perplexity/main.cpp

@@ -0,0 +1,5 @@
+int llama_perplexity(int argc, char ** argv);
+
+int main(int argc, char ** argv) {
+    return llama_perplexity(argc, argv);
+}