Add rule-set releases

.github/release-rule-set.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -e -o pipefail
+
+cd rule-set
+git init
+git config --local user.email "github-action@users.noreply.github.com"
+git config --local user.name "GitHub Action"
+git remote add origin https://github-action:$GITHUB_TOKEN@github.com/SagerNet/sing-geoip.git
+git branch -M rule-set
+git add .
+git commit -m "Update rule-set"
+git push -f origin rule-set