* Implement Initial MultiThread suggestion
* Update all the ingestion sources to use the new ContextManager
* Fix missing wraps on decorator
* Fix Unittests
* Fix linters
* Fix linters
* Fix BigQuery UnitTests
* Add UnitTests to the newly created code
* Fix unittest
* change the threads from table to schemas
* Update README.md
* Small change suggested by Sonar
* Slight change to test a different way to multithread over tables
* Debug changes
* More multithread tests
* Remove uneeded wait time
* Testing
* refactor code based on removal of time.sleep
* Fix wrong paste
* Improve ExecutionTimeContextManager
* Fix missing .get() and unit tests
* Fix conflicting changes
* Update Multithread logic with the incremental extraction
* Fix linters
* Fix unittest
* Remove commented code
* Fix Unittests
* Fix checkstyle
* Change default to threads = 1
