Add additional telemetry events

[brianp]

Description
Create a new service to send Telemetry events.

• The telemetry endpoint should be ENV configurable
• It should be usable from the backend and frontend (via backend is okay)
• It will send telemetry via HTTPS post requests
• It should respect the users existing "Opt-in for Telemetry" settings

The data structure will be in the following format:

event_name : str
event_value  : json
created_at : timestamp
user_id (optional) : str
app_id : str
version: str

The first set of telemetry should match the existing setup progression being sent to Sentry.

With this new event type, we should track setup progress as it happens. Ideally with the captured data we can see what percentage of users successfully made it across the different percents of completion, for example:

[brianp]

This should not be started until after #1170 and #1183 are completed.