Fix: File Permission Error

[billysweird]

Updated to check if writing to file or directory, Saves time and don't have to write large complicated prompts, should normally sort itself out instead.

For example without this with a simple prompt it may try and write a single files code to a directory name, and get a Error 13: Permission error. Instead this will check if the file_path is a directory or a file first, it seems that the handler response is enough to trigger the AI to look inside the directory to write the multiple files it needs to, instead of treating a directory like a file and trying to save files or write files to it.

And also using os.path.join is standard for cross-platform forgot to add this point instead of manually setting it with directory + "/" + filename, Avoids uni-code conflicts.

Just ignore the gitignore and parameter settings, you can just accept the update to the file system.