Add optional launch after install

### What is the problem or limitation you are having?

I apparently posted this in the incorrect thread. Here is the post edited for this new request.

I ended up editing the wix installer to implement optional launch after install on a windows box. I wanted to have a checkbox that launches the app when the install is finished. The checkbox in the installer is checked for launching by default, but the user can uncheck it. I made the following changes (the image shows how this looks after implementation) :

Define the Checkbox Property and Text:
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Create the Custom Action:
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Wire the Action to the Exit Dialog:
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### Describe the solution you'd like

I would rather have the ability to do this in the briefcase build. It took a lot of reading of the wix docs to figure out how to implement this one. so something like a hook that one could use like start_after_install = on (checkbox is checked by default) would be nice

### Describe alternatives you've considered

I've tried making this work within the briefcase install, but this seems to be a wix only option. I did get it to display a launch checkbox, but it didn't do anything.

### Additional context

_No response_