Add info for a roku-appium boilerplate project (#8466)

* Add info for a roku-appium boilerplate project

* Update website/docs/BoilerplateProjects.md

Co-authored-by: Christian Bromann <git@bromann.dev>

website/docs/BoilerplateProjects.md

@@ -383,4 +383,21 @@ This a template project to help you show how you can run webdriverio multiremote
 This project uses: 
      - chromedriver
      - jasmine
-     - appium
+     - appium
+
+## [webdriverio-roku-appium-boilerplate](https://github.com/AntonKostenko/webdriverIO-roku-appium)
+
+Template project to run appium tests on real Roku devices using mocha with page object pattern.
+
+- Frameworks
+    - WebdriverIO Async v7
+    - Appium 2.0
+    - Mocha v7
+    - Allure Reporting
+
+- Features
+    - Page Object Model
+    - Typescript
+    - Screenshot on failure
+    - Example tests using a sample Roku channel
+