Add ProcessTypes, its test, and many proctype definition files

util/mac/process_types/all.proctype

Index: util/mac/process_types/all.proctype
diff --git a/util/mac/process_types/all.proctype b/util/mac/process_types/all.proctype
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// 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.
+
+// This file is intended to be included multiple times in the same translation
+// unit, so #include guards are intentionally absent.
+//
+// This file is included by util/mac/process_types.h and
+// util/mac/process_types.cc to produce process type struct definitions and
+// accessors.
+
+#include "util/mac/process_types/crashreporterclient.proctype"
+#include "util/mac/process_types/dyld_images.proctype"
+#include "util/mac/process_types/loader.proctype"
+#include "util/mac/process_types/nlist.proctype"