[PWGHF] First draft of Omegac0 to OmegaPi QA workflow

[mtorresc15]

First draft of the QA workflow for the Omegac0 to OmegaPi analysis.

This PR introduces dedicated QA versions of the candidate selector, tree creator, analysis task, and ML response to allow a more detailed validation of the Omegac0 to OmegaPi analysis workflow.

The main additions are:

• Candidate selector: QA monitoring of the selection steps, with dedicated DCAFitter and KFParticle processing.
• Tree creator: dedicated QA output tables containing additional reconstruction and selection information for DCAFitter and KFParticle candidates.
• ML response: common and reconstruction-specific ML input features for both DCAFitter and KFParticle.
• Analysis task: processing DCAFitter and KFParticle candidates, with and without ML selections.

The implementation is based on the existing Omegac0 to OmegaPi analysis workflow and is intended to facilitate validation and comparison of the DCAFitter and KFParticle reconstruction and selection strategies.

This PR is opened as a draft for preliminary review and feedback.

[github-actions]

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