Add call to check_required_components()

Author: aedart

cmake/rsp-cmake-scripts-config.cmake.in

@@ -3,4 +3,9 @@
 message(NOTICE "RSP CMake Scripts Config file...")
 
 # TODO: Test of variable...
-set(RSP_FOO "bar" PARENT_SCOPE)
+set(RSP_FOO "bar" PARENT_SCOPE)
+
+# "[...] should be called at the end of the package configuration file even if the package does not have any
+# components. [...]"
+# @see https://cmake.org/cmake/help/git-stage/guide/importing-exporting/index.html#creating-a-package-configuration-file
+check_required_components("rsp-cmake-scripts")