Added `VERSION` file to repository root for easy tracking of current app version.
Corrected bug with the latest changes to the settings model that can lead to a JSON decoding error for installations without a properly stored value.
Moved the project's code of conduct out of the contributions guide and into the appropriate policy file.
Updated the contribution guide to follow the NetBox project format.
Added various issue templates based on the NetBox project formats but updated for PDA.
Added additional GitHub workflows to handle stale and closed issue and PR management.
Removed legacy stale issue workflow that was not in use.