See issue/7fb03f234030b91c38cc4f5b48bd30cf5fd6a1de.

Move args to module

Squash review.

Rebased and restricted arg visibility to pub(super)

Rebase

Changes:

• Rebase
• Add new type for optionally prefixed RID
• Add unit tests that make sure we can parse into this type
• Add example values to the RID argument help output
• Minor argument doc fixes

Changes:

• bring back fn parse_rid()
• add another unit test for URL format
• change example value from non-URN to URL

Changes:

• improve fn parse_rid()

Changes:

• Rebase