Add official builder for mac-arm64 release and debug

Bug: v8:11264
Change-Id: I9e1302a499ba6b32e9d93d81e922c9f318c2ba07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593252Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71783}

infra/mb/mb_config.pyl

@@ -74,6 +74,8 @@
       # Mac.
       'V8 Mac64': 'release_x64',
       'V8 Mac64 - debug': 'debug_x64',
+      'V8 Official Mac ARM64': 'release_arm64',
+      'V8 Official Mac ARM64 Debug': 'debug_arm64',
       'V8 Mac64 GC Stress': 'debug_x64',
       'V8 Mac64 ASAN': 'release_x64_asan_no_lsan',
       'V8 Mac - arm64 - release builder': 'release_arm64',

infra/testing/builders.pyl

@@ -1329,6 +1329,30 @@
       {'name': 'v8testing', 'variant': 'extra', 'shards': 2},
     ],
   },
+  'V8 Official Mac ARM64': {
+    'swarming_dimensions': {
+      'cpu': 'x86-64',
+      'os': 'Mac-10.15',
+    },
+    'tests': [
+      {'name': 'mozilla'},
+      {'name': 'test262', 'variant': 'default', 'shards': 2},
+      {'name': 'v8testing', 'shards': 2},
+      {'name': 'v8testing', 'variant': 'extra'},
+    ],
+  },
+  'V8 Official Mac ARM64 Debug': {
+    'swarming_dimensions': {
+      'cpu': 'x86-64',
+      'os': 'Mac-10.15',
+    },
+    'tests': [
+      {'name': 'mozilla'},
+      {'name': 'test262', 'variant': 'default', 'shards': 2},
+      {'name': 'v8testing', 'shards': 4},
+      {'name': 'v8testing', 'variant': 'extra', 'shards': 2},
+    ],
+  },
   'V8 Mac64 ASAN': {
     'swarming_dimensions': {
       'cpu': 'x86-64',