STYLE: Add namespace comments option to uncrustify

Utilities/Uncrustify/iMSTKUncrustify.cfg

@@ -441,4 +441,8 @@ cmt_indent_multi                = false    # false/true
 
 # The filename that contains text to insert at the head of a file if the file doesn't start with a C/C++ comment.
 # Will substitute $(filename) with the current file's name.
-cmt_insert_file_header          = "../HeaderForSources.txt"
\ No newline at end of file
+cmt_insert_file_header          = "../HeaderForSources.txt"
+
+# If a namespace body exceeds the specified number of newlines and doesn't have a comment after
+# the close brace, a comment will be added.
+mod_add_long_namespace_closebrace_comment = 1        # number
\ No newline at end of file