Is there any possibility to add a text file to the package, that can be found in File.DirInternals? I'd like to add a text file with help and other information, that will be installed with the package.
Add it to Files folder of your project in the Files Manager Tab in the IDE.
Then you can access it in your code with File.DirAssets directory.
Be aware that the file, in the File.DirAssets folder, is read only.
If you want to modify it in your code, you must copy it to File.DirInternal in the code.