Init dart repo

Signed-off-by: Nikolai Rodionov <iam@allanger.xyz>

example/softplayer_dart_proto_example.dart

@@ -0,0 +1,6 @@
+import 'package:softplayer_dart_proto/softplayer_dart_proto.dart';
+
+void main() {
+  var awesome = Awesome();
+  print('awesome: ${awesome.isAwesome}');
+}