Include the ReaderToolsSettings and ReaderToolsWords file in .bloomsource

We are encouraging people to use the .bloomsource file of a Bloom book in order to archive the book in REAP. But .bloomsource files do not contain the ReaderToolsSettings-XX.json and ReaderToolsWords-XX.json files (if they exist). If someone later wants to download the archived copy of the book and continue working on it as a decodable or leveled book, they will not have those necessary json files. For archiving purposes, it would be good for those files to also be included in the .bloomsource file for a book.