feat: localize release notes using google translate

docs/Changelog-bare.md

@@ -3,3 +3,40 @@ layout: bare
 ---
 
 {% include_relative Changelog.md %}
+
+<style>#google_translate_element,.skiptranslate{display:none;}body{top:0!important;}</style>
+<div id="google_translate_element"></div>
+<script>
+    function getUserLanguage() {
+        if (navigator.languages && navigator.languages.length > 0) {
+            // Chinese is the only exception where google translate needs the full code
+            // see https://sites.google.com/site/opti365/translate_codes
+            const l = navigator.languages[0]
+            if (l.length > 2 && l !== "zh-CN" && l !== "zh-TW") {
+              return l.slice(0, 2)
+            }
+            return l
+        }
+        return "en"
+    }
+
+    function googleTranslateElementInit() {
+        new google.translate.TranslateElement({
+            pageLanguage: 'en', 
+            includedLanguages: getUserLanguage(),
+             autoDisplay: false
+         }, 'google_translate_element')
+        setTimeout(() => {
+            var a = document.querySelector("#google_translate_element select")
+            a.selectedIndex = 1
+            a.dispatchEvent(new Event('change'))
+        }, 1000)
+    }
+
+    const userLanguage = getUserLanguage()
+    if (userLanguage !== "en") {
+        let script = document.createElement("script")  
+        script.src = "https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"
+        document.head.appendChild(script)
+    }
+</script>