add gitlab ci config

add logging, define context for login management

lib/api/token.dart

@@ -0,0 +1,42 @@
+import 'dart:async';
+
+import 'package:flutter/widgets.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:logger/logger.dart';
+
+class Token {
+  static final Token _token = Token._();
+  final _storage = const FlutterSecureStorage();
+  final _l = Logger();
+
+  String _tokenval = "";
+
+  static Token getInstance() {
+    return _token;
+  }
+
+  Future<String?> _readToken() async {
+    _l.d("reading token store");
+    WidgetsFlutterBinding.ensureInitialized();
+    return _storage.read(key: 'jwt');
+  }
+
+  Future<String> getToken() async {
+    var completer = Completer<String>();
+
+    if (_tokenval == "") {
+      final token = await _readToken();
+      completer.complete(token);
+    } else {
+      completer.complete(_tokenval);
+    }
+    return completer.future;
+  }
+
+  void setToken(String token) {
+    _tokenval = token;
+    _storage.write(key: 'jwt', value: token);
+  }
+
+  Token._();
+}