[namespace-registry] add new namespace "ml"

[jordanpadams]

• Namespace ID Requested: ml (lower case ML)
• Discipline or Mission LDD? discipline
• Steward Organization Name: PDS IMG
• LDD Steward Name: Michael Mcauley
• LDD Steward Email: Michael.McAuley@jpl.nasa.gov
• LDD Description: Machine Learning Classifier Discipline Local Data Dictionary
• Rationale for creation of new LDD: Specifying metadata generated by machine learning algorithms associated with PDS observational products

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Engineering Details

• @jshughes update namespace registry
• @c-suh if dLDD and repo exists here update LDD script config

[jordanpadams]

@myche @wkiri FYI. this is per this warning you will get when you generate your LDD:

>>> WARNING Init:  - Config.Properties Namespace Id Not Found:ml

[myche]

Hmm .. OK. Does this mean that the ml namespace needs to be added to some master LDD config file somewhere?

... wait, I may have just answered my own question: I see a task item above refering to exactly this.

[jordanpadams]

updated per #354 . still in dev phase so no need to add to online config yet

[jordanpadams]

@myche correct. in order to avoid the warning about the missing namespace, we need to add this to an LDDTool internal config