Add module for the WebView Support Library.

The WebView Support Library will provide functionality implemented in
the WebView APK on Android versions where WebView is updatable.
This CL adds the module named webkit, creating the package
androidx.webkit.

Bug: 68840936
Test: N/A
Change-Id: I42151e817fe376662721ed19469a607a68459f25
diff --git a/settings.gradle b/settings.gradle
index 58525ed..390ec8d 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -106,6 +106,9 @@
 include ':car'
 project(':car').projectDir = new File(rootDir, 'car')
 
+include ':webkit'
+project(':webkit').projectDir = new File(rootDir, 'webkit')
+
 /////////////////////////////
 //
 // Samples