wabt: Add run_tests.sh (#14628)

Adds run_tests.sh for the wabt project.

run_tests.sh is used as part of Chronos with cached builds:

https://github.com/google/oss-fuzz/tree/master/infra/chronos#chronos-feature--running-tests-of-a-project

Signed-off-by: Arthur Chan <arthur.chan@adalogics.com>

Author: arthurscchan

projects/wabt/Dockerfile

@@ -20,4 +20,4 @@ RUN git clone --recursive https://github.com/WebAssembly/wabt
 WORKDIR wabt
 RUN git submodule init
 RUN git submodule update
-COPY build.sh *_fuzzer.cc $SRC/
+COPY run_tests.sh build.sh *_fuzzer.cc $SRC/

projects/wabt/run_tests.sh

@@ -0,0 +1,19 @@
+#!/bin/bash -eu
+#
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+$SRC/wabt/build/wabt-unittests