DRILL-8235: Add Storage Plugin for Google Sheets (#2585)
* Getting there...
* Added Limit unit test
* Code fixes
* SerDe and Agg unit tests now passing
* Fixed type conversion bug
* Various fixes
* Fix LGTM errors
* Fix LGTM, Add unit tests
* Fixed checkstyle
* Revised unit tests
* Addressed Doc Updates
* Fix unit test
* Moved Typifier to common
* Updated comments
* Removed duplicate OAuthToken class
* Consolidated column writers
* Fixed writer bug
* Added note to writer test
* Removed case insensitive config
* Remove unused import
* Updated Readme for Windows
