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* Refactor metadataset usage in calculatepafdistancebounds function

- Remove unsued dataset path.
- Fix getting metadataset. Now obtained from config rather than auxiliary function.
- Suppress unused return values from load_metadataset.
- Move load_metadata to where it is explicitly needed.

* Fix metadataset file path in return_evaluate_network_data function

- Get metadataset file path from config rather than auxiliary function.
- Use return_train_network_path function to get train/test pose_cfg paths
- Move load_metadata to after try-catch block.

* Fix metadataset file path in return_evaluate_network_data function

- Get metadataset file path from config rather than auxiliary function.
- Suppress redefined TrainFraction from load_metadata function.
- Use return_train_network_path function to get train/test pose_cfg paths
- Move load_metadata to after try-catch block.
- Fix minor naming/formatting issues

* Fix forgotten return value

* Fix metadataset filename access in evaluate_multianimal.py and clean up unused lines in evaluate.py

* Add TODOs. Need to handle get pose_cfg paths when trainingsetindex=all

* Update naming: dlc_cfg -> test_pose_cfg

* Update naming: dlc_cfg -> test_pose_cfg

* Update evaluate.py
- Fix handling of trainingsetindex="all"
- Replace Try/Except on test/pose_cfg with check if modelfolder exists so it covers both train and test pose_cfgs.
- Add TODO related to FileNotFoundError
- Minor Refactoring

* Update evaluate_multianimal.py
- Fix handling of trainingsetindex="all"
- Replace Try/Except on test/pose_cfg with check if modelfolder exists so it covers both train and test pose_cfgs.
- Add TODO related to FileNotFoundError
- Minor Refactoring

* Update evaluate.py (requested change)
- Load config and metadata outside nested loop.

* Improve import return_train_network_path import

* Run black

* add_video: write config before extracting frames
* address issue 2463

- v2.2-3

* Update README.md

add news from 2023-2024

* Update README.md

* Update news

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Co-authored-by: Mackenzie Mathis <[email protected]>
Co-authored-by: Alexander Mathis <[email protected]>

…#2506)

* Test for the presence of snapshot files
* Update error message