👷 Add script for windows build

Author: Khaoz-Topsy

scripts/create_env_file.dart

@@ -0,0 +1,19 @@
+// ignore_for_file: avoid_print
+
+import 'dart:convert';
+import 'dart:io';
+
+Future<void> main() async {
+  Map<String, String> env = Platform.environment;
+
+  final file = File('./lib/env.dart');
+  String? contentsInBase64 = env['ENV_DART'];
+  if (contentsInBase64 == null) {
+    print('Environment variable is empty');
+    return;
+  }
+  Codec<String, String> stringToBase64 = utf8.fuse(base64);
+  String contents = stringToBase64.decode(contentsInBase64);
+  await file.writeAsString(contents);
+  print('Done');
+}