Taxonomy-resolver

- Improved filtering and searching functions
- Searching performs validation to prevent searching exceptions/errors
- Added search/validate 'by taxid' methods
- Added cached search as an option

- Added wrapper class and methods to work with the Taxonomy Resolver
- Added functions to build a Tree and converting it to `anytree` Tree (with re-parenting)
- Added command-line interface (CLI) with sub-commands for common functions

- Started development

.. links
.. _Poetry: https://python-poetry.org/
.. _CONTRIBUTING.rst: CONTRIBUTING.rst
.. _README.rst: README.rst
.. _tqdm: https://github.com/tqdm/tqdm