feat: implement Page.pause (#256)

playwright/src/main/java/com/microsoft/playwright/impl/BrowserContextImpl.java

@@ -361,6 +361,10 @@ class BrowserContextImpl extends ChannelOwner implements BrowserContext {
     });
   }
 
+  void pause() {
+    sendMessage("pause");
+  }
+
   @Override
   protected void handleEvent(String event, JsonObject params) {
     if ("route".equals(event)) {

playwright/src/main/java/com/microsoft/playwright/impl/PageImpl.java

@@ -879,7 +879,9 @@ public class PageImpl extends ChannelOwner implements Page {
 
   @Override
   public void pause() {
-
+    withLogging("BrowserContext.pause", () -> {
+      context().pause();
+    });
   }
 
   @Override