[wasm] Move test-signatures.h from test/cctest to test/common

test/common/wasm/test-signatures.h

 // Copyright 2015 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.
 
 #ifndef TEST_SIGNATURES_H
 #define TEST_SIGNATURES_H
 
 #include "src/signature.h"
 #include "src/wasm/wasm-opcodes.h"
 
@@ skipping 112 matching lines @@
   FunctionSig sig_v_i;
   FunctionSig sig_v_ii;
   FunctionSig sig_v_iii;
   FunctionSig sig_s_i;
 };
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // TEST_SIGNATURES_H