Wineskin Winery is an application dedicated to wrapper creation.

Install using homebrew

brew install --no-quarantine gcenx/wine/wineskin

The program is not co-signed, to launch it you can RMB (right mouse button) it and select Open, then Cancel, then again RMB it and select Open, and Open.

Under "Installed Engines", you need to click [+] to access a new window.
You can select an engine to download with the drop-down menu, then click "Download and install".
This will create a folder ~/Library/Application Support/Wineskin/Engines and save engines packages there.

Under "Wrapper Version", you need to click "Update" to download the latest Master Wrapper available.
This will create a folder ~/Library/Application Support/Wineskin/Wrapper and save the Master Wrapper there.

With a Master Wrapper up to date and an Engine, you can proceed and click "Create New Blank Wrapper".
You can name the new blank wrapper. This will create a folder ~/Applications/Wineskin and save the new blank Wrapper.app there.