Fix timer stuff (#580)

* Add and sort Network files to chatterino project file

src/common/NetworkTimer.cpp

@@ -0,0 +1,39 @@
+#include "common/NetworkTimer.hpp"
+
+#include "common/NetworkWorker.hpp"
+
+#include <QTimer>
+
+#include <cassert>
+
+namespace chatterino {
+
+void NetworkTimer::start()
+{
+    if (this->timeoutMS_ <= 0) {
+        return;
+    }
+
+    this->timer_ = new QTimer;
+    this->timer_->start(this->timeoutMS_);
+    QObject::connect(this->timer_, &QTimer::timeout, [timer = this->timer_] {
+        timer->deleteLater();  //
+    });
+
+    this->started_ = true;
+}
+
+bool NetworkTimer::isStarted() const
+{
+    return this->started_;
+}
+
+void NetworkTimer::onTimeout(NetworkWorker *worker, std::function<void()> cb) const
+{
+    assert(this->timer_ != nullptr);
+    assert(worker != nullptr);
+
+    QObject::connect(this->timer_, &QTimer::timeout, worker, cb);
+}
+
+}  // namespace chatterino