Contains updates to the batch API route, with corresponding tests for each of the changes:

• Main logic change: Allows for fully defined and confidential tables in batch
  • When parameters fully defined for a request, runs sdk function directly.
  • Lookup function only used when parameters missing (e.g. no business_unit)
• Refactor of batch route to have separate functions for parsing request parameters and running the functions
• Allows for mixed results from batch:
  • Some requests can succeed and others fail in the same request
  • Helpful error messages so user can see which fail
• Route mapping update
  • To shorten strings e.g. now '/events/raw' when was previously '/api/v1/events/raw'
  • SQL route mapping fix, was previously misnamed