panel apperance, added experimental tcp/udp proxy support, slight performance improvement for http proxy

scripts/udp-test-container.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+docker run -it --tty --rm \
+    -p 9999:9999/udp \
+    --label proxy.test-udp.scheme=udp \
+    --label proxy.test-udp.port=20003:9999 \
+    --network data_default \
+    --name test-udp \
+    debian:stable-slim \
+    /bin/bash -c \
+    "apt update && apt install -y netcat-openbsd && echo 'nc -u -l 9999' >> ~/.bashrc && bash"