Rest & Batch consolidation

[alejoberardino]

This one has very deep changes. I'll keep it as short as I can:

• Rest and BatchWarming transports have been consolidated into a new Http transport.
  • All requests will be processed in the background.
  • New interface allows for an arbitrary number of requests, to contemplate use cases like:
    • One request to the DP per each request to the EA.
    • A single batch request to the DP for all requests to the EA.
    • Any combination of requests, for example:
      • One for symbol batches, another for id batches.
      • Partial batches when the number of items to request would exceed the max for a batch endpoint.
• A new helper dependency Requester is added to centralize the execution of request to the Data Provider:
  • Makes rate limiting easy by processing requests sequentially and sleeping when capacity is reached.
  • Does not handle weights or priorities of any kind for now (good enough for most DPs).
  • Handles retries by adding requests back into the queue if they fail.
  • Coalesces requests by using a map alongside a linked list for the queue to ensure that repeated requests are not added as new ones.
• Background executor no longer relies on the rate limiter to sleep between calls. Now it only sleeps for a very small time (to allow for transports to implement their own timings)

[boxhock]

Looking really good, and looking forward to implementing EAs with these changes!

Just had a few small comments

[boxhock]

Finally spent some more time on the last (big) file

[github-actions]

🚀 Successfully created version bump PR: #15