Is there an Android ROM that has the ability to provide the app with fake camera stream, location, microphone stream, gallery, storage files etc…?
It would be incredibly useful to allow apps to work while giving no info / no access to private informations / permissions.
You can look into shelter app on fdroid that uses work profile to isolate any installed app in that profile form your contacts or sms or any data.
There was an option for a fake gps app somewhere in settings a while ago, not sure it still exists.
Other than that, I doubt it. Android is incredibly locked down. Maybe if you root your phone and install magisk there is a module? But then you risk losing banking apps, netflix etc.
Edit: Spoofing GPS seems to still be possible. Download a GPS spoofing app, enable developer options, then in there search for “Select mock location app”