Execute external script after install

[hbilbo]

Is your feature request related to a problem? Please describe.
It would be nice to be able to run a custom script after the installation is successfully completed. For example running a custom cleanup script, etc.

Describe the solution you'd like
In the installation settings, add an option to run an external script after the installation completes. For example, the script call could look like "/media/cleanup.sh %F" where %F would translate to whatever the installation directory ends up being. There could be a couple different variables depending on what possible files could be parsed.

Describe alternatives you've considered
Manually running the script after every install, but that can be quite tedious with enough games.

[Yelo420]

I'm not sure if this is necessary. Because you could already write a custom script that installs the game and calls the cleanup script afterwards.
You then set this as the default installation executable.

[hbilbo]

I didn't know about that option, wouldn't that require adding the custom script to every single game in the custom metadata though? I was thinking more of a global option to run a script on the install directory after every completed installation. This would keep the metadata cleaner too. Also it seems like the custom install script would need to be tailored to each game depending on the name of the executable and the steps taken. Please correct me if I'm wrong or misunderstood.