Readarr Support

• This releases adds support for Readarr.
• Fixes a bug where sometimes .r00 is not treated as the first file when it is.
• Fixes a bug with the folder watcher deleting extracted files when delete_after is set to 0.
• Add more debug messages around "locating a download's folder" to make troubleshooting easier.
• Add a configurable path parameter to Lidarr.
• Re-arranged the code to make adding new apps in the future easier.
• Updates deps and go version.

Re-released to fix homebrew.