Add fingerprint appium

lib/command_definitions.ts

@@ -132,6 +132,8 @@ export let hideSoftKeyboard = new CommandDefinition<void>(
     });
 export let getDeviceTime =
     new CommandDefinition<string>('getDeviceTime', [], 'GET', '/appium/device/system_time');
+export let fingerprint = 
+    new CommandDefinition<void>('fingerprint', ['fingerprintId'], 'POST', '/appium/device/finger_print');
 export let openDeviceNotifications = new CommandDefinition<void>(
     'openDeviceNotifications', [], 'POST', '/appium/device/open_notifications');
 export let rotationGesture = new CommandDefinition(

lib/index.ts

@@ -127,6 +127,8 @@ export interface ExtendedWebDriver extends WebDriver {
       (strategy?: 'default'|'tapOutside'|'tapOut'|'swipeDown'|'pressKey'|'press',
        key?: string) => wdpromise.Promise<void>;
 
+  fingerprint: (fingerprintId: string) => wdpromise.Promise<void>;
+
   // See https://github.com/webdriverio/webdriverio/blob/v4.6.1/lib/protocol/getDeviceTime
   getDeviceTime: () => wdpromise.Promise<string>;