* Factor out get or create address into one sql string
* Factor out getChecksumAddress method in address repo
* Update address repo methods to not need a receiver
* Move address repository to libraries/shared
- limit missing headers results set to 100 so that extraction doesn't
excessively block delegation
- wrap checked headers functions in repository struct
- move storage repository to factory, to correspond with event
repository path
- remove unused files
- reformat sql
- remove line breaks in imports
- enables decoupling event extraction/persistence from transformation
- modifies event transformer, converter, and log chunker to accept
payload that includes internal log database ID with log data
- remove alias for transformer pkg as shared_t
- remove unused mock watcher repository
libraries/shared; adjust omni test_helpers to drop and recreate
checked_headers table to avoid reaching 1600 column limit after repeated
tests (dropping columns doesn't actually remove them from contributing
to that limit)
