feat: add translation feature and ban character set functionality

src/ts/globalApi.svelte.ts

@@ -2261,4 +2261,36 @@ export class PerformanceDebugger{
             this.kv[key].push(...other.kv[key])
         }
     }
+}
+
+export function getLanguageCodes(){
+    let languageCodes:{
+        code: string
+        name: string
+    }[] = []
+
+    for(let i=0x41;i<=0x5A;i++){
+        for(let j=0x41;j<=0x5A;j++){
+            languageCodes.push({
+                code: String.fromCharCode(i) + String.fromCharCode(j),
+                name: ''
+            })
+        }
+    }
+    
+    languageCodes = languageCodes.map(v => {
+        return {
+            code: v.code.toLocaleLowerCase(),
+            name: new Intl.DisplayNames([
+                DBState.db.language === 'cn' ? 'zh' : DBState.db.language
+            ], {
+                type: 'language',
+                fallback: 'none'
+            }).of(v.code)
+        }
+    }).filter((a) => {
+        return a.name
+    }).sort((a, b) => a.name.localeCompare(b.name))
+
+    return languageCodes
 }