Update SDK for v2 APIs

[EvanWang2]

Description

• Update SDK for v2 APIs
• See https://docs.genai.scale.com/get-started/quickstart for list of v2 APIs
• Am I supposed to write tests? (sounds a bit redundant if the endpoints already have them)

How did you test your code?

Which of the following have you done to test your changes? Please describe the tests that you ran to verify your changes.

• Created new unit tests in tests/ for the newly implemented methods
• Updated existing unit tests in tests/ to cover changes made to existing methods

Checklist

Please make sure all items in this checklist have been fulfilled before sending your PR out for review!

• I have commented my code in details, particularly in hard-to-understand areas
• I have updated Readme.rst document with examples for newly implemented public methods
• I have reviewed Deployment and Publishing Guide for Python SDK document
• I incremented the SDK version in _version.py (unless this PR only updates the documentation).
• In order to release a new version, a "Release Summary" needs to be prepared and published after the merge

[michaelbishoff]

I forget why this file is commented out, but can we add some tests here that use only the v2 APIs. The tests ensure that the generated client is valid (we saw an edge case where oneOf properties in the openapi.yaml file didn't generate correctly)

https://github.com/scaleapi/scaleapi-python-client/blob/master/tests/test_v2_client.py

[michaelbishoff]

Can you update the version
https://github.com/scaleapi/scaleapi-python-client/pull/99/files#diff-16c2b6ca2c519545d0787aa3b67ac9d24917b3bc19aeac8a9b94149ca5ccb443R1

[EvanWang2]

Unable to create a chat project with template variables in the test SDK environment, so there are no tests for task creation and fetching. The test API key I use doesn't associate with the projects under my account.