There's no method that doesn't take some effort, you'll have to add the files as binary data manually, but I believe you can add several files at a time. As for extracting them, I believe the easiest way would be the following:
1) Add the paths of all files to a list, the full path to each file where they are when you build your application.
2) Save the list contents to a file and include this file as binary as well.
3) When you need to extract the files, load the list file into the list object and run a loop through the list to extract each file with the path stored in the each line.
Note: You can just use the list object to add all the file paths from within fusion, it beats adding each file manually.