[CUDA] Bundle CCCL for JIT compilation (#2357)

* Ship CCCL for JIT compilation

* Remove cexpf

mlx/backend/common/utils.h

@@ -2,6 +2,7 @@
 
 #pragma once
 
+#include <filesystem>
 #include <tuple>
 #include <vector>
 
@@ -11,6 +12,9 @@ namespace mlx::core {
 
 std::string get_primitive_string(Primitive* primitive);
 
+// Return the directory that contains current shared library.
+std::filesystem::path current_binary_dir();
+
 inline int64_t
 elem_to_loc(int elem, const Shape& shape, const Strides& strides) {
   int64_t loc = 0;