Add MatrixClient.doesServerSupportLogoutDevices() for MSC2457 (#2297)

Author: hughns

src/client.ts

@@ -6593,6 +6593,14 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
         }
     }
 
+    /**
+     * Query the server to see if it supports the MSC2457 `logout_devices` parameter when setting password
+     * @return {Promise<boolean>} true if server supports the `logout_devices` parameter
+     */
+    public doesServerSupportLogoutDevices(): Promise<boolean> {
+        return this.isVersionSupported("r0.6.1");
+    }
+
     /**
      * Get if lazy loading members is being used.
      * @return {boolean} Whether or not members are lazy loaded by this client