[BUG] - missing ListOptions namespace declaration causes library to crash

[mercymantis]

The namespace declaration for ListOptions is missing from /src/Services/VPC/VPCService.php and /src/Services/Firewall/FirewallService.php files which causes the library to crash when calling list methods.

This can be reproduced by calling $client->firewall->getFirewallGroups and $client->vpc->getVPCs

[Vinnie Marone]

Thanks for reporting this issue @mercymantis . Should be resolved, now