Adding missing use statement
Adding missing use statement

if-block in L#59 couldn't work because ItemInterface was not imported.

```
if (!$menu instanceof ItemInterface) {
```
naitsirch/mopa-bootstrap-bundle,auipga/MopaBootstrapBundle,auipga/MopaBootstrapBundle,naitsirch/mopa-bootstrap-bundle,auipga/MopaBootstrapBundle