BIDS MEG CTF importer

[MaximeBICMTL]

Extracted from #1397
Builds on #1462

Description

This PR adds support for MEG CTF import to the BIDS LORIS importer.

Thanks to previously merged PRs, no SQL patch is required to test the importer and view its data in the LORIS electrophysiology browser. However, note that this visualization may look incomplete (flat-looking signals and no sensor map). As there are still some PRs needed in the front-end to adapt the LORIS electrophysiology browser front-end to MEG data.

A MEG CTF acquisition is not a file but actually a directory. Unfortunately the renaming of CTF acquisitions is non-trivial and there does not seem to be a reliable code or tool to do so in Python (there is a function in mne-bids but it is obviously incomplete/incorrect). As such, the feature to rename BIDS CTF directories is added in the LORIS BIDS utilities, the code to do so being copied from Matlab.

Testing

This PR has been tested with the Brainstorm data sample (public data) and the MPN dataset (private data). Integration tests are to be added later.

Here is the output for the Brainstorm data sample. Note that the data sample is not used as-is, the subject label and participants.tsv file need to be modified to match the LORIS candidate identifier format.

/data/loris/bids_imports/MEG_BIDS_Brainstorm_data_sample_BIDSVersion_1.4.1
├── dataset_description.json
├── participants.tsv
├── README
└── sub-BS0001
    └── ses-V1
        ├── anat
        │   └── sub-BS0001_ses-V1_T1w.nii.gz
        ├── meg
        │   ├── sub-BS0001_ses-V1_task-AEF_run-01_channels.tsv
        │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.ds
        │   │   ├── BadChannels
        │   │   ├── ChannelGroupSet.cfg
        │   │   ├── ClassFile.cls
        │   │   ├── MarkerFile.mrk
        │   │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.acq
        │   │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.eeg
        │   │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.hc
        │   │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.hist
        │   │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.infods
        │   │   ├── sub-BS0001_ses-V1_task-AEF_run-01_meg.meg4
        │   │   └── sub-BS0001_ses-V1_task-AEF_run-01_meg.res4
        │   ├── sub-BS0001_ses-V1_task-AEF_run-02_channels.tsv
        │   └── sub-BS0001_ses-V1_task-AEF_run-02_meg.ds
        │       ├── BadChannels
        │       ├── ChannelGroupSet.cfg
        │       ├── ClassFile.cls
        │       ├── MarkerFile.mrk
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.acq
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.eeg
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.hc
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.hist
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.infods
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.meg4
        │       ├── sub-BS0001_ses-V1_task-AEF_run-02_meg.newds
        │       └── sub-BS0001_ses-V1_task-AEF_run-02_meg.res4
        └── sub-BS0001_ses-V1_scans.tsv

7 directories, 30 files