Ability to set charon.make_before_break in strongswan.conf
There is a new feature "make before break" in strongswan 5.3.0.
Its purpose is to prevent connectivity gaps from happening when re-authenticating, details see here:
We would need the ability to set this config option using pfSense GUI
Implement make bofre break feature avaliable on strongswan 5.3.0 useful for IKEv2. Fixes #4626