Track NIP-05 in PostHog

[martindsq]

Issues covered

#1178

Description

I'm using PostHog's userProperties to add the NIP-05 of the user when possible. I checked in PostHog that we indeed receive the property and can add a NIP-05 column there.

How to test

1. Add the POSTHOG api key in devsecrets
2. Use the app, the NIP-05 will be set when the user opens the Home tab
3. Navigate to PostHog
4. Go to Activity
5. See the new events coming with a NIP-05 property attached to the user (bare in mind that events coming from nos-dev can be filtered using App Namespace there.

Screens

hots/Video

[joshuatbrown]

Tested and found myself in PostHog. This looks great!