test(perf): add M3U cancellation benchmark

apps/electron-backend-e2e/project.json

@@ -12,6 +12,16 @@
         "e2e": {
             "dependsOn": ["electron-backend:build-e2e"]
         },
+        "benchmark-m3u-refresh-cancellation": {
+            "dependsOn": ["electron-backend:build-e2e"],
+            "executor": "nx:run-commands",
+            "cache": false,
+            "parallelism": false,
+            "options": {
+                "cwd": "apps/electron-backend-e2e",
+                "command": "pnpm exec playwright test --config=playwright.performance.config.ts"
+            }
+        },
         "packaged-frame-copy-smoke": {
             "dependsOn": ["test-packaged-frame-copy-fixtures"],
             "executor": "nx:run-commands",