extmod/modutimeq: Refactor into optimized class.

    import utimeq, utime
    # Max queue size, the queue allocated statically on creation
    q = utimeq.utimeq(10)
    q.push(utime.ticks_ms(), data1, data2)
    res = [0, 0, 0]
    # Items in res are filled up with results
    q.pop(res)
diff --git a/py/builtin.h b/py/builtin.h
index 893e471..282eb1c 100644
--- a/py/builtin.h
+++ b/py/builtin.h
@@ -110,6 +110,7 @@
 extern const mp_obj_module_t mp_module_urandom;
 extern const mp_obj_module_t mp_module_uselect;
 extern const mp_obj_module_t mp_module_ussl;
+extern const mp_obj_module_t mp_module_utimeq;
 extern const mp_obj_module_t mp_module_machine;
 extern const mp_obj_module_t mp_module_lwip;
 extern const mp_obj_module_t mp_module_websocket;