Feat: Overhaul config loading

[mrkaye97]

Copy of hatchet-dev#296

Overhauling the client config to use Pydantic to get rid of a lot of convoluted parsing + validation code.

Main things here:

• Got rid of the config.yaml stuff since nobody seems to be using that and it makes the code paths significantly more complicated.
• Strict typing for all of the fields with the same defaults + field validators in the cases where there's parsing logic like extracting something from the JWT
• Got rid of the ConfigLoader, since now we can instantiate the class directly
• Enabled mypy for the new config class now that types check out

One other important thing is I think we should remove all of the load_dotenv() stuff in favor of expecting that the person running the example has the correct env vars set, since this is more likely to be how the SDKs are used, and using load_dotenv creates race conditions between imports that rely on the env vars and when that line is run

Some logs:

hatchet-sdk-py3.13matt@Matts-MacBook-Pro hatchet-python-v2 % pr simple
[DEBUG] 🪓 -- 2025-01-13 14:37:37,120 - creating new event loop
[INFO]  🪓 -- 2025-01-13 14:37:37,121 - ------------------------------------------
[INFO]  🪓 -- 2025-01-13 14:37:37,121 - STARTING HATCHET...
[DEBUG] 🪓 -- 2025-01-13 14:37:37,121 - worker runtime starting on PID: 88540
[DEBUG] 🪓 -- 2025-01-13 14:37:37,129 - action listener starting on PID: 88557
[INFO]  🪓 -- 2025-01-13 14:37:37,133 - starting runner...
[DEBUG] 🪓 -- 2025-01-13 14:37:37,133 - starting action listener health check...
[DEBUG] 🪓 -- 2025-01-13 14:37:37,137 - '_test-worker' waiting for ['myworkflow:step1']
[DEBUG] 🪓 -- 2025-01-13 14:37:37,673 - starting action listener: _test-worker
[DEBUG] 🪓 -- 2025-01-13 14:37:38,320 - acquired action listener: 34db85d3-7830-4862-af3d-1ed51e3b35b3
[DEBUG] 🪓 -- 2025-01-13 14:37:38,321 - sending heartbeat

[grutt]

Good stuff! One outstanding todo

[grutt]

we may not need tenant id any more since the jwt wont be provisioned for a different tenant... something for a future pr

[grutt]

address todo?

[mrkaye97]

I was planning to leave this for now since it's related to that outstanding PR in the non-fork - happy to address this now though!

[mrkaye97]

this is done 👍

[grutt]

One other thought, it might be good to add a DEBUG config value so we're able to set via env var in addition to the client init.

[mrkaye97]

One other thought, it might be good to add a DEBUG config value so we're able to set via env var in addition to the client init.

This seems reasonable to me - another option would be to make the default for that param be set to something like os.getenv("HATCHET_WORKER_DEBUG", "False") == "True" or something, but I like the idea of trying to put everything in the config