Move dialogs into a separate dir and create them dynamically.

Add "ignore user".
Update libqmatrixclient.

imports/Spectral/Dialog/JoinRoomDialog.qml

@@ -0,0 +1,38 @@
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+import QtQuick.Layouts 1.12
+
+import Spectral.Component 2.0
+
+Dialog {
+    anchors.centerIn: parent
+    width: 360
+
+    id: root
+
+    title: "Start a Chat"
+
+    contentItem: ColumnLayout {
+        AutoTextField {
+            Layout.fillWidth: true
+
+            id: identifierField
+
+            placeholderText: "Room Alias/User ID"
+        }
+    }
+
+    standardButtons: Dialog.Ok | Dialog.Cancel
+
+    onAccepted: {
+        var identifier = identifierField.text
+        var firstChar = identifier.charAt(0)
+        if (firstChar == "@") {
+            spectralController.createDirectChat(spectralController.connection, identifier)
+        } else if (firstChar == "!" || firstChar == "#") {
+            spectralController.joinRoom(spectralController.connection, identifier)
+        }
+    }
+
+    onClosed: destroy()
+}