Investigate use case for adding RBMS CV

[wickr]

Descriptive summary

https://id.loc.gov/vocabulary/rbmscv.html

This may be useful for current content or in the future.
Remediation of current uncontrolled data may be necessary.

Expected behavior

Make a decision on whether to add this CV and to what field(s).

Related work

Link to related tickets or prior related work here.

Accessibility Concerns

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