Add example WireGuard server and client configs

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

wireguard/client.conf

@@ -0,0 +1,11 @@
+[Interface]
+PrivateKey = wMy0gixHHH1D8HOI9CaUXMLJTCW9+34sVGuocWDz328=
+Address = 192.168.200.2/24
+
+[Peer]
+PublicKey = UNZuRQxGmTSe7LkRJKfBlA/02RxPaNgl4qu/+ePYqwo=
+Endpoint = 10.15.108.21:51820
+AllowedIPs = 0.0.0.0/0
+PersistentKeepalive = 25
+
+# wg-quick up wg0