Add a library suitable for libfuzzer with a small unit test runner shell

test/fuzzer/fuzzer.status

Index: test/fuzzer/fuzzer.status
diff --git a/test/ignition.isolate b/test/fuzzer/fuzzer.status
similarity index 50%
copy from test/ignition.isolate
copy to test/fuzzer/fuzzer.status
index 7e4e581a6b085c1925cdffc6d21a8f3d1e9207e2..df922bbf4e6d398165322c804085e757128071c9 100644
--- a/test/ignition.isolate
+++ b/test/fuzzer/fuzzer.status
@@ -1,14 +1,7 @@
 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-{
-  'variables': {
-    'command': [
-      '../tools/run-tests.py',
-    ],
-  },
-  'includes': [
-    'cctest/cctest.isolate',
-    'mjsunit/mjsunit.isolate',
-  ],
-}
+
+[
+
+]