Hello author, I use fyne-io/fyne-cross for packaging...

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Checklist

• [X] I have searched the issue tracker for open issues that relate to the same feature, before opening a new one.
• [X] This issue only relates to a single feature. I will open new issues for any other features.

Is your feature request related to a problem?

Hello author, I use fyne-io/fyne-cross for packaging, but after packaging the Android application, it already comes with the androidmainfest.xml file. How should I add the permissions I want to add? Is there any case guide for guidance? If added to FyneApp.toml, what format should I fill in?

Is it possible to construct a solution with the existing API?

Hello author, I use fyne-io/fyne-cross for packaging, but after packaging the Android application, it already comes with the androidmainfest.xml file. How should I add the permissions I want to add? Is there any case guide for guidance? If added to FyneApp.toml, what format should I fill in?

Describe the solution you'd like to see.

Hello author, I use fyne-io/fyne-cross for packaging, but after packaging the Android application, it already comes with the androidmainfest.xml file. How should I add the permissions I want to add? Is there any case guide for guidance? If added to FyneApp.toml, what format should I fill in?