* fix: isolation level and nested db.commit() with retry wrappers on concurrent update errors
* refactor: incorporated review comments
changes decorator methods to managed_tx_method and async_managed_tx_method
new enum CommitMode
removed commented commit() from the previous commits
* fix: merge pre-commit errors
* fix: merge pre-commit changes
* fix: conflict in existing OasstErrorCode
* refactor: Added a refresh just to be sure that the select command is triggered on the mapped object
* fix: added refresh for async decorator
Co-authored-by: James Melvin <melvin@gameface.ai>