[ENH] Integrate trials object with GPFA

[Moritz-Alexander-Kern]

This pull request introduces an enhancement to GPFA using the the elephant.trials module to represent trials. This change is part of a greater effort to provide a more structured and unified approach for handling trial data in Elephant.

Trial representations

• trial object: The new trial_object is now used as the primary input structure for representing trials. This object handles trial data, see https://elephant.readthedocs.io/en/latest/reference/trials.html .

• list of lists: The previous implementation relied on a nested structure of lists to represent trials.

[pep8speaks]

Hello @Moritz-Alexander-Kern! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers:

Comment last updated at 2024-03-26 11:21:07 UTC

[coveralls]

coverage: 87.935% (-0.3%) from 88.264% when pulling f993f8c627e4e55238e423a3b6e9ba6c78015696 on INM-6:feature/trials_gpfa into 6363690cece6d2e9f10342511db1eee87d3863a8 on NeuralEnsemble:master.