Add llvmlite cleanup

Author: metab0t

src/pyoptinterface/_src/jit_llvm.py

@@ -1,4 +1,5 @@
 from llvmlite import ir, binding
+import atexit
 
 from typing import List
 
@@ -7,6 +8,9 @@
 binding.initialize_native_target()
 binding.initialize_native_asmprinter()
 
+# Register shutdown function to clean up LLVM resources
+atexit.register(binding.shutdown)
+
 
 class LLJITCompiler:
     def __init__(self):