Add logging to worker

[anth-volk]

Fixes #1947. This code:

• Creates a new class, WorkerLogger, with a variety of methods related to logging, including one to push logs to GCP
• Creates a second class, MemoryMonitor, that opens a process on a new thread to monitor memory usage, logs usage stats, and logs a warning if system memory usage exceeds 75%
• Adds logging to worker runs, including accessing of worker and job IDs
• Refactors compute_general_economy to make it easier to embed a logger into its operations

[anth-volk]

I'm going to have to do some refactoring due to changes made for chunking

[anth-volk]

Closing due to incompatibility with refactor, but keeping branch open