Added automatic executable version updates

src/version.h.in

@@ -0,0 +1,23 @@
+/**
+ * src/version.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * 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.
+ */
+#pragma once
+
+namespace clanguml::version {
+static constexpr auto CLANG_UML_VERSION = "@GIT_VERSION@";
+static constexpr auto CLANG_UML_LIBCLANG_VERSION = "@LIBCLANG_VERSION_STRING@";
+} // namespace clanguml::version