Graduate script annotations

[elliotgunton]

Pull Request Checklist

• Fixes Graduate script_annotations experimental feature #1286
• Tests updated
• Documentation/examples updated
• Good commit messages and/or PR title

Description of PR
Graduate script annotations

• Users no longer need to set the experimental_features["script_annotations"] flag
• We no longer add the hera__script_annotations environment variable to scripts, so no longer need to check it in the runner util.py code
• Update documentation and examples - I am intending to follow this PR with a review/rearranging of the walk through section, which will also address Walk-through documentation updates #1273

With this change, the default code path becomes the "script annotations" path, so we always check for Annotated, rather than using simple kwarg checks, so we are able to remove the _get_parameters_from_callable function.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.1%. Comparing base (0afe1b9) to head (9eda87d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1287     +/-   ##
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- Coverage   86.2%   86.1%   -0.1%     
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  Files         60      60             
  Lines       4102    4079     -23     
  Branches     657     648      -9     
=======================================
- Hits        3538    3516     -22     
  Misses       392     392             
+ Partials     172     171      -1     

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[alicederyn]

Isn't this a behaviour change? We used to append to script.env if it existed, but now we overwrite it.

[elliotgunton]

In the case of user script environment variables, yes. Will fix

[elliotgunton]

Thank you for spotting! #1289