Auto merge of #18670 - avadacatavra:interactive-metrics, r=jdm

added time to interactive metrics

<!-- Please describe your changes on the following line: -->

Added time to interactive metrics and refactored metrics/lib

I need to write tests, but wanted to submit the PR for review

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/18670)
<!-- Reviewable:end -->

components/script/dom/websocket.rs

@@ -262,9 +262,10 @@ impl WebSocket {
                 address: address,
             });
 
+            let pipeline_id = self.global().pipeline_id();
             self.global()
                 .script_chan()
-                .send(CommonScriptMsg::Task(WebSocketEvent, task))
+                .send(CommonScriptMsg::Task(WebSocketEvent, task, Some(pipeline_id)))
                 .unwrap();
         }