### Description
Given all the shell files that now exist in the repo, would be nice to
have linting/formatting around them (in addition to the existing
shellcheck which doesn't do anything to format the shell code). This PR
introduces `shfmt` to both check for changes and apply formatting when
the associated make targets are called.
### Description
Update all other connectors to use the new downstream architecture that
was recently introduced for the s3 connector.
Closes#1313 and #1311
* Add notion connector and supporting code
* minor fixes
* Add notion deps to extras
* Use the same return type for both helper methods
* Don't ignore types that aren't recognized when mapping json
* Add support for recursively getting docs
* Add recursive search for databases
* fix logging
* fix linting
* remove debugging code
