pybricks.hubs.MoveHub: Enable system.
This reverts commit
We need system functions such as reset to jump to firmware update mode.
#define PYBRICKS_PY_COMMON_KEYPAD (0)
#define PYBRICKS_PY_COMMON_LIGHT_MATRIX (0)
#define PYBRICKS_PY_COMMON_MOTORS (1)
-#define PYBRICKS_PY_COMMON_SYSTEM (0)
+#define PYBRICKS_PY_COMMON_SYSTEM (1)
#define PYBRICKS_PY_EXPERIMENTAL (0)
#define PYBRICKS_PY_GEOMETRY (0)
#define PYBRICKS_PY_HUBS (1)
