Updates ElvUI and ElvUI_OptionsUI folders in local game/addons directory using latest files from Tukui repo (https://github.com/tukui-org/ElvUI/tree/main).

What this requires:

• An internet connection (to fetch latest version)

• An addon directory (destination)

• A downloads or other directory (to store zip file before program can unzip and move files to addon directory)

How it works:

• Gets current version number of ElvUI from official github repository via GET request

• Checks if zip file of current version exists already in downloads directory

• If yes, exits program

• Downloads latest version of ElvUI from official github repository as a zip file to downloads directory

• Adds timestamp to zip file

• Unzips file, returns folder with files in it

• Looks inside folder

• Checks if matching files with _OLD suffix exist already in addon directory

• If true, deletes files with _OLD suffix

This checks if this program has been run already so that it doesn't block itself in the next step.

• Checks if matching files exist already in addon directory

• If true, adds OLD suffix to file names in addon directory

• Moves files from folder to addon directory

• Deletes folder