feature: create wireshark IKE + ESP decryption config

[laf0rge]

For R&D, it is very useful to look at the decrypted traffic in wireshark. One can copy+paste the various key material manually from stdout of the program to the wireshark UI, but that's very tmie consuming and inefficient.

I'm planning to create a patch that generates the esp_sa and ikev2_decryption_table lines for the related files in ~/.wireshark/

[fasferraz]

I also thought doing something similar, but my main setup is using this tool in one VM, and an ePDG in another VM or in the network, so i usually do the wireshark capture directly in windows vmnet1/8 interfaces, or via trace directly in the ePDG (that already generates ununcrypted payloads).