add github action

.github/workflows/minify.yml

@@ -0,0 +1,42 @@
+name: Minify JavaScript
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'script.user.js'
+
+jobs:
+  minify:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout main branch
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '16'
+
+    - name: Install UglifyJS
+      run: npm install uglify-js -g
+
+    - name: Minify JavaScript
+      run: |
+        uglifyjs script.user.js -o script.min.js -c -m
+
+    - name: Create/Update minified branch
+      run: |
+        git config --global user.name 'GitHub Action'
+        git config --global user.email 'action@github.com'
+        git checkout --orphan minified
+        git rm -rf .
+        mv script.min.js script.user.js
+        git add script.user.js
+        git commit -m "Update minified script"
+        git push origin minified --force
+

script.user.js

@@ -1,7 +1,7 @@
 // ==UserScript==
 // @name JPDB Userscript (6a67)
 // @namespace http://tampermonkey.net/
-// @version 0.1.100
+// @version 0.1.101
 // @description Script for JPDB that adds some styling and functionality
 // @match https://jpdb.io/*
 // @grant GM_addStyle