[DevTools] Extract NetworkLog and HAREntry to a separate network_log module

third_party/WebKit/Source/devtools/front_end/extensions/module.json

 {
     "dependencies": [
         "components",
-        "object_ui"
+        "object_ui",
+        "network_log"
     ],
     "scripts": [
         "ExtensionAPI.js",
         "ExtensionAuditCategory.js",
         "ExtensionRegistryStub.js",
         "ExtensionTraceProvider.js",
         "ExtensionServer.js",
         "ExtensionPanel.js",
         "ExtensionView.js"
     ]
 }