Remove attrdict dependency as it doesn't work for Python >3.9

[kks32]

Description

This PR uses a local custom version of AttrDict already defined in util instead of attrdict, which is deprecated and breaks for Python >3.9

Motivation and Context

AgavePy can run on Python >3.9

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue) Fixes attrdict is still used in one place. #125

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have signed-off my commits with git commit -s
• I have added tests to cover my changes.
• All new and existing tests passed.

[jarosenb]

Hello Krishna,

Since Tapis V2 is on track to be completely deprecated, it's unlikely that there will be another official release on PyPI. If you need to use AgavePy with newer versions of Python, the suggested workflow is to use DesignSafe's fork of AttrDict which updates the stdlib imports for Python 3.10+ compatiblity . You can pip install it using

pip install attrdict git+https://github.com/DesignSafe-CI/AttrDict@83b779ee82d5b0e33be695d398162b8f2430ff33

Or add the following line to your pyproject.toml if using Poetry:

attrdict = { git = "https://github.com/DesignSafe-CI/AttrDict", rev = "83b779ee82d5b0e33be695d398162b8f2430ff33" }

This fork has been deployed in the DesignSafe portal for several months now with no issue, using Python 3.11.