TSDB ingest of historical data sets: a dedicated `piker` tool to run parallelized history gathering

[goodboy]

Once we get to the point where we're pulling both historical and real-time data (after #247 lands) there will be an obvious need for a local caching system to avoid needless network usage/latency especially when displaying real-time charts for massive sets of ever increasing price data.

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TODO:

• [ ] a piker ingest command to run a parallelized history gatherer program based on a default symbol set and the user's config
• [ ] some kind of crawler system to obtain all the symbols?
  • eg. ultra-finance seems to have an example of this in its stockCrawler script.

[goodboy]

ultra-finance seems to have an example of this in its stockCrawler script.

[goodboy]

For financial data time series I just found alpaca's MarketStore.

It looks like just the thing to back distributed charting and real time algorithmics. The provide a python client though it'll likely need to be trio-ized for streaming.