feat: add managed ACME listener and log rotation

trojan-master/asset/rotate-trojan-log

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -euo pipefail
+
+log=/var/log/trojan.log
+limit=$((20 * 1024 * 1024))
+[[ -f "$log" ]] || exit 0
+size=$(stat -c %s "$log")
+(( size < limit )) && exit 0
+
+rm -f "${log}.5.gz"
+for n in 4 3 2 1; do
+  [[ -f "${log}.${n}.gz" ]] && mv "${log}.${n}.gz" "${log}.$((n + 1)).gz"
+done
+cp "$log" "${log}.1"
+: > "$log"
+gzip -f "${log}.1"