Move helper scripts to a new dir, make temp fixes to allow this

pythonbpf/expr_pass.py

@@ -23,7 +23,7 @@ def eval_expr(func, module, builder, expr, local_sym_tab, map_sym_tab, structs_s
             return None
     elif isinstance(expr, ast.Call):
         # delayed import to avoid circular dependency
-        from .bpf_helper_handler import helper_func_list, handle_helper_call
+        from .helper.bpf_helper_handler import helper_func_list, handle_helper_call
 
         if isinstance(expr.func, ast.Name):
             # check deref

pythonbpf/functions_pass.py

@@ -2,7 +2,7 @@ from llvmlite import ir
 import ast
 
 
-from .bpf_helper_handler import helper_func_list, handle_helper_call
+from .helper.bpf_helper_handler import helper_func_list, handle_helper_call
 from .type_deducer import ctypes_to_ir
 from .binary_ops import handle_binary_op
 from .expr_pass import eval_expr, handle_expr

pythonbpf/helper/bpf_helper_handler.py

@@ -1,6 +1,6 @@
 import ast
 from llvmlite import ir
-from .expr_pass import eval_expr
+from pythonbpf.expr_pass import eval_expr
 from enum import Enum