The links and descriptions of how to create a new Expo app and how to install RNF were incorrect.

These updates push more responsibility to the Expo docs themselves and reduce the amount that RNF needs to document.

…Access() (#7445)

* Fixed signed in/out mishap
* Adding info about GoogleSignIn.revokeAccess

…Is / JSON fields (#7448)

* docs(server-integration): fix deprecated APIs and fields

sendToDevice deprecated, use sendMulticast or sendEachForMulticast instead for sending messages to multiple devices.
Correct field names: fcm_options->fcmOptions, image->imageUrl.

* Update docs/messaging/server-integration.md

* style(lint): `yarn lint:markdown --write`

my own suggestion had poor formatting

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Co-authored-by: Mike Hardy <github@mikehardy.net>

…vices plugin > 4.3.15

also bump all javascript dependencies and yarn

this was speculative earlier when Xcode changed and
simulator list changed, to discover what was available

it takes approximately a minute though and is not worth
the delay normally