Add new module Measurement Data #299

[Ludee]

Summary of the discussion

Add metadata keys for module section Measurement Data.

Type of change (CHANGELOG.md)

Added

• Add a module Measurement Data for dataset (#313)

Workflow checklist

Automation

Closes #299

PR-Assignee

• 🐙 Follow the workflow in CONTRIBUTING.md
• 📝 Update the CHANGELOG.md
• 📙 Update the documentation
• 🐙 Assign a reviewer to the PR

Reviewer

• 🐙 Follow the Reviewer Guidelines
• 🐙 Provided feedback and show sufficient appreciation for the work done

[Ludee]

This module is ready for implementation. Please review @Cpprentice

[Cpprentice]

Okay so first, this pull request contains a ton of changes that are not related to new modules and it further combines the changes for the module energy system and measurement data at many places.
I only focussed on the changes related to the measurement module.

Here are the things I found:

• CHANGELOG.md: the Changelog does not yet contain the addition of the measurement module
• oemetadata/v2/v21/metadata_key_details.md: the ontology classes are missing for the new properties - Do we use the predicates from the context json here?
• docs/oemetadata/metadata_key_description.md: same applies here
• docs/oemetadata/metadata_key_details.md: Does not have the keys for the measurement module yet
• oemetadata/v2/v21/metadata_key_details.md, oemetadata/v2/v21/metadata_key_description.md, docs/oemetadata/metadata_key_description.md, and oemetadata/v2/v21/build_source/schemas/module_measurement_data.json: The metadata key descriptions in v21 still use the required cardinality for moduleDescription and instrumentIdentifier. In my Opinion we should add least keep the moduleDescription as required if the module is used. The instrumentIdentifier can be optional.