Pymstodo

* possible fix for 6 and 8
* switch to ruff

* transition to Python 3.10

* Hotfix release

* It's now possible to import TaskStatusFilter and PymstodoError
* More accurate work with datetime fields (taking into account the time zone)
* Minor code improvements

* Сhanged scope to only Tasks.ReadWrite. All praise to anwar3606

* Documentation added