(brave) Add an uninstaller script

[AdmiringWorm]

Before starting, ensure that you have done the following.

• I have verified that there is no other issue or discussion covering the feature or enhancement
• I have verified there is no open pull request for the feature or enhancement
• I have verified the package to improve is located in this repository

What do you want to add?

I want an uninstaller script for the brave package to be added, this may need to rely on autohotkey or some other automated navigation framework.

What problem will the feature/enhancement solve?

Currently, there is no uninstall script which causes the user to be prompted about uninstall possibly not being silent.

If I remember correctly, this was done this way because we could not make the uninstall silent (at least not reliably), and there was no interest at the time to look at trying to automate the uninstallation using autohotkey.

If we add an uninstall script, that either silently uninstalls (if possible), or using autohotkey to make the uninstall the software this prevents the need for the user to having to select yes or no when prompted.

If the feature or enhancement is approved:

• I am willing to create a pull request to implement the feature or enhancement

Additional Context

This will rely heavily on the community itself to see if there are anyone willing to add this enhancement, at the moment I am not interested in making the uninstall completely silent nor diving into autohotkey.