Description

It would be useful to gain insight into memory usage in helping to debug runtime issues.

Work Done

Added the v8 npm package to gather heap usage statistics
Added conditional logging to log these heap usage stats
Added 2 environment variables to control heap stats logging and interval
- LOG_NODE_HEAPSTATS
- string value of true or false (case insensitive) to enable the heap stats logging
- LOG_NODE_HEAPSTATS_INTERVAL_MS
- string value of a number (in milliseconds) representing the interval to log heap stats at
Updated <type>.env.json files to add new env vars for visibility
Updated config.js to look for new env var values