[DRAFT] MOABB: Redesign DataIO for better efficiency and flexibility

.github/workflows/tests.yml

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+# SpeechBrain Benchmark tests to ease continuous integration
+name: SpeechBrain Benchmark test
+
+# Runs on pushes to master and all pull requests
+on:    # yamllint disable-line rule:truthy
+    push:
+        branches: [main, develop]
+    pull_request:
+        branches:
+            - '*' # all branches, including forks
+
+jobs:
+    tests:
+        name: Tests
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                python-version: [3.11] # python 3.12 is not working for some strange reason
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/cache@v4
+              id: cache-uv
+              with:
+                  path: ~/.cache/uv
+                  key: ${{ runner.os }}-python-${{ matrix.python-version }}-uv
+            - name: Set up Python ${{ matrix.python-version }}
+              uses: actions/setup-python@v5
+              with:
+                  python-version: ${{ matrix.python-version }}
+            - name: Full dependencies
+              run: |
+                  pip install uv
+                  uv pip install --system -r requirements.txt
+                  cd benchmarks/MOABB && uv pip install --system -r extra-requirements.txt
+            - name: Display Python version
+              run: python -c "import sys; print(sys.version)"
+            - name: Consistency tests with pytest
+              run: |
+                  pytest tests

benchmarks/MOABB/dataio/__init__.py

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+"""Utils functions to run the benchmark study on EEG Decoding."""
+
+from .datasets import InMemoryDataset, EpochedEEGDataset, RawEEGDataset
+from .splitters import (
+    CrossSessionSplitter,
+    CrossDatasetSplitter,
+    CrossSubjectSplitter,
+)
+from .splitters import LeaveKOutSplitter, MetadataSplitter
+
+
+__all__ = [
+    "InMemoryDataset",
+    "EpochedEEGDataset",
+    "RawEEGDataset",
+    "MetadataSplitter",
+    "LeaveKOutSplitter",
+    "CrossSubjectSplitter",
+    "CrossSessionSplitter",
+    "CrossDatasetSplitter",
+]