add nvix as editor

hosts/common/optional/pentesting.nix

@@ -0,0 +1,18 @@
+{pkgs, ...}: {
+  programs = {
+    wireshark = {
+      enable = true;
+      usbmon.enable = true;
+      dumpcap.enable = true;
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    metasploit
+    exploitdb
+    termshark
+    nmap
+    dirstalk
+    hashcat
+  ];
+}