Add usage ping feature metric

What does this MR do and why?

Adds the metric to track if the instance is part of the registration features program.

FYI for other reviewers:

1. I am using the new instrumentation classes for this but we still need to add them into usage_data.rb to send them over via Service Ping.
2. The feature is still internally called usage_ping_features but since we renamed Usage Ping to Service Ping, we opted for using "ServicePing" as the metric name

Issue: #338155 (closed)

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

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