feat: DIA-1685: [sdk] Create example predictions and annotations from a LabelConfig

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Hi @matt-bernstein!

This PR was automaticaly generated via Follow Merge. Please ensure that all linked upstream Pull Requests are merged before proceeding with this one.

• https://github.com/HumanSignal/label-studio-sdk/pull/363 linked by Workflow Run

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 66.49%. Comparing base (97ee09c) to head (6a9ed95).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #265 +/- ## ======================================= Coverage 66.49% 66.49% ======================================= Files 47 47 Lines 2462 2462 ======================================= Hits 1637 1637 Misses 825 825 ```

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