Telemetry handler for Phoenix LiveView instrumentation.

Attaches to LiveView telemetry events to track:

• LiveView mounts (as "LiveView" type transactions)
• handle_event callbacks (as timed layers within transactions)
• handle_params callbacks (as timed layers within transactions)

Usage

In your application's start/2 function:

def start(_type, _args) do
  ScoutApm.Instruments.LiveViewTelemetry.attach()
  # ... rest of supervision tree
end

This will automatically instrument all LiveView modules in your application.