added "is discord working" bool back

src/discordgodot.cpp

@@ -51,6 +51,8 @@ void Discord_SDK::_bind_methods()
 
     ClassDB::bind_method(D_METHOD("refresh"), &Discord_SDK::refresh);
 
+    ClassDB::bind_method(D_METHOD("get_is_discord_working"), &Discord_SDK::get_is_discord_working);
+
     ClassDB::bind_method(D_METHOD("get_result_int"), &Discord_SDK::get_result_int);
 }
 
@@ -192,7 +194,12 @@ int64_t Discord_SDK::get_end_timestamp() const
     return activity.GetTimestamps().GetEnd();
 }
 
+bool Discord_SDK::get_is_discord_working() const
+{
+    return result == discord::Result::Ok && app_id > 0;
+}
+
 int Discord_SDK::get_result_int() const
 {
     return static_cast<int>(result);
-}
+}

src/discordgodot.h

@@ -63,6 +63,7 @@ public:
     int64_t get_end_timestamp() const;
     void set_end_timestamp(const int64_t &value);
 
+    bool get_is_discord_working() const;
     int get_result_int() const;
 };