Added Lambdatest in cloud service providers

Author: jahmed2345

src/Codeception/Module/WebDriver.php

@@ -175,6 +175,32 @@
  *                  os_version: 10
  *                  browserstack.local: true # for local testing
  * ```
+ *
+ * ### LambdaTest
+ *
+ * 1. Create an account at [LambdaTest](https://www.lambdatest.com/) to get your username and access key
+ * 2. In the module configuration use the format `username`:`access key`@hub.lambdatest.com' for `host`
+ * 3. Configure `os` and `os_version` under `capabilities` to define the operating System
+ * 4. If your site is available only locally or via VPN you should use a tunnel app. In this case add capabilities.setCapability("tunnel",true);.
+ *
+ * ```yaml
+ *    modules:
+   enabled:
+	  - WebDriver:
+		 url: http://mysite.com
+		 host: '<username>:<access key>@hub.lambdatest.com'
+		 build: <your build name>
+		 name: <your test name>
+		 port: 80
+		 browser: chrome
+		 capabilities:
+			 os: Windows
+			 os_version: 10
+			 browser_version: 86
+			 resolution: 1366x768
+			 tunnel: true # for local testing
+ * ```
+ *
  * ### TestingBot
  *
  * 1. Create an account at [TestingBot](https://testingbot.com/) to get your key and secret