• Add a new option, SWANCTL, to install swanctll utility
• When VICI option is selected, install libvici.h to include directory, it's useful when you need to build a custom code linked to libvici
• Pass path to USE_LDCONFIG otherwise libraries will not be visible

PR: 204098
Approved by: maintainer
Obtained from: pfSense
Sponsored by: Rubicon Communications (Netgate)