Enhancement: Cleanup Slack module and its dependencies

[kalisp]

Is there an existing issue for this?

• I have searched the existing issues.

Please describe the feature you have in mind and explain what the current shortcomings are?

Current official bundle is using Slack addon from here https://github.com/ynput/ayon-slack . Source code in Openpype addon is unnecessary and should be removed.

How would you imagine the implementation of the feature?

Remove Slack module in OP addon

Its dependencies (slack sdk) should be removed from OP pyproject.toml and moved to Slack addon one. (This depends on automatizing creation of dependency packages though.)

Remove vendorized Python2 from ayon-slack as Ayon is not supporting Python2.

Are there any labels you wish to add?

• I have added the relevant labels to the enhancement request.

Describe alternatives you've considered:

No response

Additional context:

No response

[cuID:OP-7975]