MM-57878 Add PerformanceReporter for clientside performance metrics (#26800)

* Define rough code for PerformanceReporter

* Create a component to manage the PerformanceReporter

* Start adding tests for PerformanceReporter

* Add test for web vitals reporting

* Update schema to more closely match the API spec

* Collect marks as counters and further update structure of API payload

* Add some outstanding TODOs about the API structure

* Add counter for long tasks

* Add EnableClientMetrics without any System Console UI

* Have PerformanceReporter use EnableClientMetrics

* Have the PerformanceReporter only report results when logged in

* Add test for having PerformanceReporter fall back to fetch

* Stop logging errors for measurements failing

* Remove buffered from observer

* Remove the Mystery Ampersand

* Still record marks with telemetry actions even if telemetry is disabled

* Add timestamps to performance reports

* Reuse the new telemetry code for the old telemetry

* The second half of the last commit

* Use Node performance libraries in all tests

* Set version of PerformanceReport

* Switch to the proper version of EnableClientMetrics

* Remove TODO for unneeded field

* Add user agent and platform detection

* Updated metrics API route

webapp/package-lock.json

@@ -147,6 +147,7 @@
         "tinycolor2": "1.4.2",
         "turndown": "7.1.1",
         "typescript": "5.3.3",
+        "web-vitals": "3.5.2",
         "zen-observable": "0.9.0"
       },
       "devDependencies": {
@@ -23014,6 +23015,11 @@
         "minimalistic-assert": "^1.0.0"
       }
     },
+    "node_modules/web-vitals": {
+      "version": "3.5.2",
+      "resolved": "https://registry.npmjs.org/web-vitals/-/web-vitals-3.5.2.tgz",
+      "integrity": "sha512-c0rhqNcHXRkY/ogGDJQxZ9Im9D19hDihbzSQJrsioex+KnFgmMzBiy57Z1EjkhX/+OjyBpclDCzz2ITtjokFmg=="
+    },
     "node_modules/webidl-conversions": {
       "version": "7.0.0",
       "dev": true,