Use GenericEtl Class from aind-data-transformation library

[jtyoung84]

Is your feature request related to a problem? Please describe.
It will be nice to consolidate all etl jobs to use the same framework

Describe the solution you'd like
Remove the GenericEtl and BaseEtl classes from this repo and import the GenericEtl class from aind-data-transformation

Describe alternatives you've considered
Leaving things as they are

Additional context
Add any other context or screenshots about the feature request here.