Add temporary "unimplemented" Register box

TODO.md

@@ -1,3 +1,4 @@
+- cancel sign in, sign out key icon
 - Media
   - Confirmation box after picking file to upload
   - Handle set avatar upload errors

src/icons/thin/register.svg

@@ -0,0 +1,3 @@
+<svg height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg">
+    <path d="m13.473 7.196c-.425-.439-.401-1.127.035-1.552l4.461-4.326c.218-.211.498-.318.775-.318.282 0 .563.11.776.331zm-7.334 11.021c-.092.089-.139.208-.139.327 0 .25.204.456.456.456.114 0 .229-.042.317-.128l.749-.729-.633-.654zm6.33-8.425-2.564 2.485c-1.378 1.336-2.081 2.63-2.73 4.437l1.132 1.169c1.825-.593 3.14-1.255 4.518-2.591l2.563-2.486zm7.477-7.659-6.604 6.405 3.326 3.434 6.604-6.403c.485-.469.728-1.093.728-1.718 0-2.088-2.53-3.196-4.054-1.718zm-1.946 11.333v7.534h-16v-12h8.013l2.058-2h-12.071v16h20v-11.473z"/>
+</svg>

src/icons/thin/reset-password.svg

@@ -0,0 +1,3 @@
+<svg clip-rule="evenodd" fill-rule="evenodd" height="24" width="24" xmlns="http://www.w3.org/2000/svg">
+    <path d="m2.458 9.012c-.297.947-.458 1.955-.458 3 0 5.52 4.481 10 10 10 5.52 0 10-4.48 10-10 0-5.519-4.48-10-10-10-2.121 0-4.083.668-5.703 1.796l1.703 2.204h-6.58l1.935-6.012 1.718 2.223c1.958-1.389 4.346-2.211 6.927-2.211 6.623 0 12 5.377 12 12s-5.377 11.988-12 11.988-12-5.365-12-11.988c0-1.036.132-2.041.379-3zm10.35-3.012c.292.821.375 1.346 1.01 1.609.637.264 1.073-.052 1.854-.423l1.142 1.142c-.373.787-.687 1.218-.423 1.854.262.634.784.716 1.609 1.009v1.617c-.816.29-1.347.375-1.61 1.01-.264.636.052 1.071.424 1.853l-1.142 1.142c-.79-.375-1.219-.687-1.85-.424-.639.265-.723.793-1.014 1.611h-1.616c-.292-.821-.375-1.347-1.01-1.61-.637-.264-1.072.052-1.854.423l-1.142-1.142c.366-.771.689-1.212.423-1.854-.263-.635-.793-.719-1.609-1.009v-1.617c.817-.29 1.346-.373 1.609-1.009.264-.637-.051-1.07-.423-1.854l1.142-1.142c.788.374 1.218.687 1.854.423.635-.263.719-.792 1.01-1.609zm-.808 8c-1.105 0-2-.896-2-2 0-1.105.895-2.001 2-2.001 1.104 0 2 .896 2 2.001 0 1.104-.896 2-2 2z"/>
+</svg>

src/qml/Pages/AddAccount/AddAccount.qml

@@ -9,7 +9,7 @@ HPage {
         ]
 
         SignIn { Component.onCompleted: forceActiveFocus() }
-        Item {}  // TODO
-        Item {}  // TODO
+        Register {}
+        Recovery {}
     }
 }

src/qml/Pages/AddAccount/Register.qml

@@ -0,0 +1,29 @@
+import QtQuick 2.12
+import QtQuick.Layouts 1.12
+import "../../Base"
+
+HBox {
+    id: signInBox
+    clickButtonOnEnter: "ok"
+
+    buttonModel: [
+        { name: "ok", text: qsTr("Register from Riot"), iconName: "register" },
+    ]
+
+    buttonCallbacks: ({
+        ok: button => {
+            Qt.openUrlExternally("https://riot.im/app/#/register")
+        }
+    })
+
+
+    HLabel {
+        wrapMode: Text.Wrap
+        text: qsTr(
+            "Registering is not implemented yet. You can create a new " +
+            "account from a client that supports it, such as Riot."
+        )
+
+        Layout.fillWidth: true
+    }
+}