Start rewriting backend with pyotherside+asyncio

src/qml/Chat/Banners/UnknownDevicesBanner.qml

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+import QtQuick 2.7
+import "../../Base"
+import "../utils.js" as ChatJS
+
+Banner {
+    color: HStyle.chat.unknownDevices.background
+
+    avatar.visible: false
+    icon.svgName: "unknown_devices_warning"
+    labelText: "Unknown devices are present in this encrypted room."
+
+    buttonModel: [
+        {
+            name: "inspect",
+            text: qsTr("Inspect"),
+            iconName: "unknown_devices_inspect",
+        }
+    ]
+
+    buttonCallbacks: {
+        "inspect": function(button) {
+            print("show")
+        },
+    }
+}