[ENH] add ElectricalStimulation and *Parameters metadata to MEEG jsons

[sappelhoff]

• closes electrical stimulation during MEG/EEG recordings #1635

related bids-validator legacy PR:

• https://github.com/bids-standard/bids-validator/pull/1831

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (405b053) 87.83% compared to head (c881c91) 87.83%.
Report is 2 commits behind head on master.

❗ Current head c881c91 differs from pull request most recent head 4ddf09f. Consider uploading reports for the commit 4ddf09f to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1638   +/-   ##
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  Coverage   87.83%   87.83%           
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  Files          16       16           
  Lines        1356     1356           
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  Hits         1191     1191           
  Misses        165      165           

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[dorahermes]

lgtm, thanks!

[effigies]

Looks good, but we need to add these fields to the spec in a new table, such as here for EEG:

bids-specification/src/modality-specific-files/electroencephalography.md

Lines 92 to 114 in efbe6ab

	Those fields MUST be present:
	<!-- This block generates a metadata table.
	These tables are defined in
	src/schema/rules/sidecars
	The definitions of the fields specified in these tables may be found in
	src/schema/objects/metadata.yaml
	A guide for using macros can be found at
	https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
	-->
	{{ MACROS___make_sidecar_table("eeg.EEGRequired") }}
	Those fields SHOULD be present:
	<!-- This block generates a metadata table.
	These tables are defined in
	src/schema/rules/sidecars
	The definitions of the fields specified in these tables may be found in
	src/schema/objects/metadata.yaml
	A guide for using macros can be found at
	https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
	-->
	{{ MACROS___make_sidecar_table("eeg.EEGRecommended") }}