feat: push notifications

[jamshale]

Adds firebase push notification capability when using a mediator with the configured firebase plugin.

Things of note:

• Began adding this to bifold but was blocked by the fact that changes were needed to the android and ios build files, and that the required libraries wouldn't work without a valid firebase account and project. Could maybe figure out a way to add this as a bifold option and pull it out of the bc wallet repo at some point but I don't have a path forward with this right now.
• Because I didn't create the firebase apps in bifold or add the react native libraries I tried to have bifold contain no code about the push notification logic. As a result I didn't follow the same patterns in some places as the bifold supported functionality. For instance I created a modal in this repo instead of bifold and didn't follow the action pattern in the Developer view.
• Most of the development was done in android. IOS actually receiving push notifications is untested. This is because apple requires the app have APNS push notification capability to produce a firebase token, and that requires an apple developer account with signing privileges. I added the logic that I think is needed and added an attempt at a github action to load the required entitlements file. (the env variables are currently hardcoded as well).
• Because I've been unable to test on IOS the push icon is currently the default. I added a BC icon to android.
• The firebase account is my own personal account and they should be replaced by a bc gov managed one.

Here is some sequence diagrams of current features: https://hackmd.io/@NQjeSsXCR3Cmgs2Lr-M8ow/SJCS87BC2

Here is a demo video of current status:

Mediator doesn't support firebase:

push-notifications-no-mediator.webm

Mediator does support firebase:

push-notifications-with-mediator-plugin.webm

There are 2 new env variables:

• MEDIATOR_USE_PUSH_NOTIFICATIONS --> if false or undefined the push notification logic will be completely ignored. Set to true if enabled
• MEDIATOR_LABEL (Required) --> This is what is uses to discover firebase protocol and send the token. Otherwise it would need to discover on every agent. If this is a problem then could work around it.

** Currently it will ask for push notifications permission but send a blank token. It will be defaulted to off and will need to be turned on via development screen before receiving push notifications. **

I would like to write some unit tests. I had some earlier but deleted them after the modal broke the required mocks.

[jleach]

@jamshale Is this one ready for review? If not are you able to move it to "Draft", otherwise we can remove the "do not merge" label and review it.

[jamshale]

@jamshale Is this one ready for review? If not are you able to move it to "Draft", otherwise we can remove the "do not merge" label and review it.

Awesome! I did some work recently and want to go over it and update the description. I should have it ready for review today.
The 'do not merge' was more about the firebase config files being on my personal account. I have added some additional functionality recently after a discussion with Clecio but it should be ready soon.

[cvarjao]

can you please make it "off" by default. We will start using internally, and once we have fully tested we can change to default "on"

[jamshale]

can you please make it "off" by default. We will start using internally, and once we have fully tested we can change to default "on"

Yes will do.

[jamshale]

@jleach Ok, I would like to open this for review now.

[bryce-mcmath]

Some small things, overall seems fairly sturdy. I'll check out the branch and test locally later and see if I find any other issues.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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[jamshale]

I can give access to my firebase account if anyone wants to test with the mediator plugin. Or just send the service account file. It's just on free tier, so it's not much of a concern giving it out.

[bryce-mcmath]

Looks good to me. @jleach @wadeking98 @cvarjao how do we feel about merging this?