Tests: Add RunCMake.CommandLine make_directory test checks

Tests/RunCMake/CommandLine/E_make_directory-directory-with-parent-check.cmake

@@ -0,0 +1,3 @@
+if(NOT IS_DIRECTORY ${out}/parent/child)
+  set(RunCMake_TEST_FAILED "child directory was not created")
+endif()

Tests/RunCMake/CommandLine/E_make_directory-three-directories-check.cmake

@@ -0,0 +1,6 @@
+if(NOT IS_DIRECTORY ${out}/d1)
+  set(RunCMake_TEST_FAILED "directory d1 was not created")
+endif()
+if(NOT IS_DIRECTORY ${out}/d2)
+  set(RunCMake_TEST_FAILED "directory d2 was not created")
+endif()