[watchlist] Add leszeks to src/baseline watchlist

Change-Id: I983d3c0a14238aeaa017f083b5df30668f6670e1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2848472
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74207}

WATCHLISTS

@@ -51,6 +51,9 @@
                   '|test/cctest/interpreter/' \
                   '|test/unittests/interpreter/',
     },
+    'baseline': {
+      'filepath': 'src/baseline/'
+    },
     'feature_shipping_status': {
       'filepath': 'src/flags/flag-definitions.h',
     },
@@ -110,6 +113,10 @@
     'interpreter': [
       'rmcilroy@chromium.org',
     ],
+    'baseline': [
+      'leszeks+watch@chromium.org',
+      'verwaest+watch@chromium.org',
+    ],
     'feature_shipping_status': [
       'hablich@chromium.org',
     ],