Create designated directory for diffs and file backups

[kordless]

As we integrate more version control capabilities into the project, such as applying diffs and creating backups of modified files, we should create a standardized directory structure to store these artifacts.

The proposed solution is to add a new top-level directory called something like "diffs_and_backups" that can house the following:

• Diff files generated by the LLM or other tools, with a naming convention like {filename}diff{timestamp}.txt
• Backup copies of files before they are modified, named like {filename}backup{timestamp}.txt
• Any other version control related artifacts

Having a designated home for these files will keep the project organized, make it easy to locate diffs and backups, and avoid cluttering up the main directories.

Please provide any feedback on the proposed directory name and structure. Once finalized, we can create the new directory and establish it as the standard location for storing diffs, backups, and similar version control files.

[kordless]

We need to add a way to roll back a change if needed.