CW-273-Don't-add-node-under-Advanced-Privacy-Settings-if-it-already-exists (#876)

* don't add existing node

* minor fixes

* Add back IsExecutingState to connect [skip ci]

---------

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

cw_core/lib/node.dart

@@ -73,6 +73,25 @@ class Node extends HiveObject with Keyable {
     }
   }
 
+  @override
+  bool operator ==(other) =>
+      other is Node &&
+          (other.uriRaw == uriRaw &&
+              other.login == login &&
+              other.password == password &&
+              other.typeRaw == typeRaw &&
+              other.useSSL == useSSL &&
+              other.trusted == trusted);
+
+  @override
+  int get hashCode =>
+      uriRaw.hashCode ^
+      login.hashCode ^
+      password.hashCode ^
+      typeRaw.hashCode ^
+      useSSL.hashCode ^
+      trusted.hashCode;
+
   @override
   dynamic get keyIndex {
     _keyIndex ??= key;