Add common resourceId to network events (#37707)

- Add a `resource_id` field to `EventActor` and `NetworkEventActor`
- Store a `next_resource_id` field in DevtoolsInstance
- Add `resource_id` parameter to `NetworkEventActor::new`
- Increment `next_resource_id` when
`DevtoolsInstance::find_network_event_actor` is called so each network
event has a unique id

Testing: Ran servo in devtools mode and can see the data showing in
`status`,`type`, `transferred` ,`size` and `timeline` columns of each
request, also logged the devtools instance and can see unique
`resourceId` for each request.
Fixes: https://github.com/servo/servo/issues/37661

Signed-off-by: Uthman Yahaya Baba <uthmanyahayababa@gmail.com>

components/devtools/lib.rs

@@ -120,6 +120,7 @@ struct DevtoolsInstance {
     actor_workers: HashMap<WorkerId, String>,
     actor_requests: HashMap<String, String>,
     connections: HashMap<StreamId, TcpStream>,
+    next_resource_id: u64,
 }
 
 impl DevtoolsInstance {
@@ -182,6 +183,7 @@ impl DevtoolsInstance {
             actor_requests: HashMap::new(),
             actor_workers: HashMap::new(),
             connections: HashMap::new(),
+            next_resource_id: 1,
         };
 
         thread::Builder::new()
@@ -509,8 +511,10 @@ impl DevtoolsInstance {
                 name.into_mut().clone()
             },
             Vacant(entry) => {
+                let resource_id = self.next_resource_id;
+                self.next_resource_id += 1;
                 let actor_name = actors.new_name("netevent");
-                let actor = NetworkEventActor::new(actor_name.clone());
+                let actor = NetworkEventActor::new(actor_name.clone(), resource_id);
                 entry.insert(actor_name.clone());
                 actors.register(Box::new(actor));
                 actor_name