feat(auth): add statsd to free access script

[StaberindeZA]

Because

• Need to be able to track free access program reconcilation script start and shutdown.

This pull request

• Adds statsd increments for start and shutdown of free access reconcile script

Issue that this pull request solves

Closes: (issue number)

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Pull request overview

Adds lifecycle instrumentation to the free-access-program-reconcile maintenance script so its execution can be monitored via StatsD metrics.

Changes:

• Emit a StatsD counter on script startup.
• Emit a StatsD counter on script shutdown and attempt to close the StatsD client to flush metrics.