Add support for fcmOptions

[mathieu21]

Add support for fcmOptions: https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages#AndroidFcmOptions

Including Analytics labels used to filter data in Firebase

[williamdes]

Hi @mathieu21
Could you test this before a release is done ?

[yaroslavsnisarua]

When send Push with analyticsLabel, it not shown at Firebase Chart.

[williamdes]

See: ToothlessGear/node-gcm#340 (comment)

Indeed this parameter is not supported in the FCM Legacy HTTP Server API.

So we need to migrate to V1 API, see #9

cc @mathieu21

[quocthi2005]

Hi @williamdes
How to add analyticsLabel to the message?
Firebase has a feature to set this.
https://firebase.google.com/docs/cloud-messaging/understand-delivery#adding-analytics-labels-to-messages

How to set this in this package?

[williamdes]

Hi!

we need to migrate to V1 API, see #9

The current API does not take the analytics label in account. So we need to migrate to the new API.
Do you want to help?

[quocthi2005]

Thank you @williamdes

Do you want to help?

Yes, it's great

[williamdes]

Thank you @williamdes

Do you want to help?

Yes, it's great

Feel free to send pull-requests