Add some support for strings in structs

examples/execve5.py

@@ -28,6 +28,7 @@ def hello(ctx: c_void_p) -> c_int32:
     strobj = "hellohellohello"
     dataobj.pid = process_id
     dataobj.ts = ts
+    # dataobj.comm = strobj
     print(f"clone called at {ts} by pid {process_id}, comm {strobj}")
     events.output(dataobj)
     return c_int32(0)