Help: Add notes for topic 'file-globbing-directory-listing'

Help/release/dev/file-globbing-directory-listing.rst

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+file-globbing-directory-listing
+-------------------------------
+
+* The :command:`file(GLOB)` and :command:`file(GLOB_RECURSE)` commands
+  learned a new ``LIST_DIRECTORIES <bool>`` option to specify whether
+  the glob result should include directories.