packaging capability added.

fix `find_package(Format.cmake xy.z.w)` version determination

Author: Arniiiii

.gitignore

@@ -1 +1,2 @@
-build*
+build*
+Format.cmakeConfigVersion.cmake

packaging/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.14)
+
+set(Format.cmake_VERSION 1.8.3)
+
+include(GNUInstallDirs)
+
+set(CMAKEDIR
+  ${CMAKE_INSTALL_DATADIR}/cmake/Format.cmake/
+    CACHE
+      PATH
+      "Path to a folder to which install the script Format.cmake . By default: ${CMAKE_INSTALL_DATADIR}/cmake/Format.cmake/"
+)
+
+include(CMakePackageConfigHelpers)
+
+include(GNUInstallDirs)
+
+write_basic_package_version_file(${CMAKE_CURRENT_LIST_DIR}/../Format.cmakeConfigVersion.cmake VERSION ${Format.cmake_VERSION} COMPATIBILITY AnyNewerVersion ARCH_INDEPENDENT)
+
+install(FILES "${CMAKE_CURRENT_LIST_DIR}/../CMakeLists.txt"
+  DESTINATION "${CMAKEDIR}" RENAME "Format.cmakeConfig.cmake"
+)
+
+install(FILES "${CMAKE_CURRENT_LIST_DIR}/../Format.cmakeConfigVersion.cmake"
+  DESTINATION "${CMAKEDIR}"
+)
+install(FILES "${CMAKE_CURRENT_LIST_DIR}/../cmake-format.cmake"
+  DESTINATION "${CMAKEDIR}"
+)
+
+install(FILES "${CMAKE_CURRENT_LIST_DIR}/../git-clang-format.py"
+  DESTINATION "${CMAKEDIR}"
+)
+
+message(STATUS "Use `find_package(Format.cmake)` to use it")