mobile: app notifications needs to be exported to i18n

[Ethanol48]

It seems that notifications were missed for the implementation of i18n.

I found a file that could be the responsible for these notifications.

https://github.com/daimo-eth/daimo/blob/master/apps/daimo-mobile/src/logic/externalAction.ts

[dcposch]

Needs a bit more than export.

• When we're rendering a UI (web or mobile), we can use the user's configured locale
• When rendering a link preview, no locale > can be included in link based on the sender (link creator's) locale
• When sending an app notification, comes from server > I think we'll have to store the recipient's last-known locale

[Ethanol48]

We could add this field to the Account in storage

account storage