Request notifications permission so we can target Android 13
Starting next month (September 2023) it will be required to target Android 13 to publish to the Play Store.
On Android 13, we need to request the POST_NOTIFICATIONS permission.
This change adds the permission as required/optional to the plugins that do create notifications. It also adds a popup to request it the first time you open the app.
Edited by Albert Vaca Cintora