Add support to manage cross-signing and key backup (#461)

* Add useDeviceList hook

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add isCrossVerified func to matrixUtil

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add className prop in sidebar avatar comp

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add unverified session indicator in sidebar

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add info card component

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add css variables

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add cross signin status hook

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add hasCrossSigninAccountData function

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add cross signin info card in device manage component

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add cross signing and key backup component

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Fix typo

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* WIP

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add cross singing dialogs

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add cross signing set/reset

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add SecretStorageAccess component

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* Add key backup

Signed-off-by: Ajay Bura <ajbura@gmail.com>

* WIP

* WIP

* WIP

* WIP

* Show progress when restoring key backup

* Add SSSS and key backup

src/client/initMatrix.js

@@ -7,6 +7,7 @@ import RoomList from './state/RoomList';
 import AccountData from './state/AccountData';
 import RoomsInput from './state/RoomsInput';
 import Notifications from './state/Notifications';
+import { cryptoCallbacks } from './state/secretStorageKeys';
 
 global.Olm = require('@matrix-org/olm');
 
@@ -36,6 +37,7 @@ class InitMatrix extends EventEmitter {
       cryptoStore: new sdk.IndexedDBCryptoStore(global.indexedDB, 'crypto-store'),
       deviceId: secret.deviceId,
       timelineSupport: true,
+      cryptoCallbacks,
     });
 
     await this.matrixClient.initCrypto();