Move most context menu into dir.

imports/Spectral/Menu/RoomListContextMenu.qml

@@ -0,0 +1,42 @@
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+import QtQuick.Controls.Material 2.12
+
+Menu {
+    property var room
+
+    id: root
+
+    MenuItem {
+        text: "Favourite"
+        checkable: true
+        checked: room.isFavourite
+
+        onTriggered: room.isFavourite ? room.removeTag("m.favourite") : room.addTag("m.favourite", 1.0)
+    }
+
+    MenuItem {
+        text: "Deprioritize"
+        checkable: true
+        checked: room.isLowPriority
+
+        onTriggered: room.isLowPriority ? room.removeTag("m.lowpriority") : room.addTag("m.lowpriority", 1.0)
+    }
+
+    MenuSeparator {}
+
+    MenuItem {
+        text: "Mark as Read"
+
+        onTriggered: room.markAllMessagesAsRead()
+    }
+
+    MenuItem {
+        text: "Leave Room"
+        Material.foreground: Material.Red
+
+        onTriggered: room.forget()
+    }
+
+    onClosed: destroy()
+}