Support `Machina`'s rpacp configuration

[valarnin]

https://github.com/ravahn/machina/pull/17 added support for rpcap to Machina.

This is a request to add support for rpcap to the FFXIV parser plugin, via one of the following:

• A config section in the GUI when checking the Use WinPCAP-compatible library checkbox
• A config section in the FFXIV_ACT_Plugin.config.xml file

The primary drive behind this request is the continued move towards containerized versions of wine/proton/lutris on the Linux side, where previous methods to allow network capture are no longer viable because process capabilities such as CAP_NET_ADMIN cannot be passed up through the container.