Add Environment service with platform, build mode, and app info support

finlog_app/fluttery/lib/environment.dart

@@ -0,0 +1,27 @@
+import 'package:fluttery/fluttery.dart';
+
+/// Abstract Environment contract
+abstract class Environment extends Service {
+  /// Platform checks
+  bool get isAndroid;
+
+  bool get isIOS;
+
+  /// Build mode
+  bool get isDebug;
+
+  bool get isRelease;
+
+  bool get isProfile;
+
+  /// App info
+  Future<void> loadPackageInfo();
+
+  String get appName;
+
+  String get packageName;
+
+  String get version;
+
+  String get buildNumber;
+}