Add Intercom library and first event

[0xtuytuy]

Is your feature request related to a problem? Please describe.
We use Intercom to communicate with our customers on chat, we would also like to use Intercom to help customers understand what the app does with a product tour. This needs to be driven by custom events that the app will send to intercom informing intercom what is happening on the app so that the product tour can then be built on these custom events.

Describe the solution you'd like
We need to install this library: https://developers.intercom.com/installing-intercom/docs/basic-javascript in the webapp.

We then need to add an event like this: https://developers.intercom.com/installing-intercom/docs/intercom-javascript#intercomtrackevent

the name of the event should be 'connected-wallet' this event should be sent to intercom when the user has finished connecting his wallet (metamaks or other wallet supported)

Describe alternatives you've considered
best product tour really...

Additional context
Add any other context or screenshots about the feature request here.