ASA: Cache API stats

[nealmcloughlin]

Describe the task

Cache calculated statistics for improved performance of ASA when there is a large volume of users.

Acceptance Criteria

• Stats are cached in redis for public ASA endpoints
• Set a max TTL for 1 day for each entry
• Cache run data in redis as part of SFMS processing pipeline
• Key by run_datetime, new SFMS processing updates existing or non-existing keys with new data

Additional context

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