feat: improve cross-uni app workflow

frontend/app/capacitor.config.ts

@@ -1,9 +1,17 @@
 import {CapacitorConfig} from '@capacitor/cli';
 
+const variant = process.env.APP_VARIANT ?? 'default';
+// eslint-disable-next-line unicorn/prefer-module, @typescript-eslint/no-var-requires
+const uniConfig = require(`./config/${variant}/default.json`);
+
 const config: CapacitorConfig = {
-  appId: 'de.anyschool.app',
-  appName: 'StApps',
+  appId: uniConfig.android.packageName, // TODO: iOS bundle ID
+  appName: uniConfig.appName,
   webDir: 'www',
+  android: {
+    flavor: variant,
+  },
+  // TODO: iOS scheme
   cordova: {
     preferences: {
       'AndroidXEnabled': 'true',