Add mapping datatype for configuration settings

[Montekkundan]

Brief summary of changes

• Adds a mapping configuration datatype for settings that store source values with mapped external values.
• Adds ConfigMappings schema support, upgrade/drop SQL, and raisinbread seed data for visit mappings.
• Updates the Configuration module UI and save path so mapping rows can be added, edited, removed, and persisted.

Testing instructions (if applicable)

• Open http://localhost:8080/configuration/ and confirm Visit Mappings renders with paired value / mapped value inputs.
• Add a new visit mapping, submit, and confirm it persists after reload.
• Edit an existing mapped value, submit, and confirm the updated value persists after reload.
• Remove a mapping row and confirm it is removed from the page and database.

Link(s) to related issue(s)

• Resolves [configuration] Create Mapping Type Option #10458

[skarya22]

Nice functionality!
There seems to be nothing warning the user if they try to save a mapping with just one value and not both sides of the pair, though it is not saved. I think there should be validation to not let you submit if it's incomplete -- OR it should save with it incomplete (if validation is too hard / adds too much code)
Right now it doesnt save but also doesnt tell you it wont save which is confusing

[Montekkundan]

Added validation so mapping rows with only one side filled cannot be submitted

[skarya22]

LGTM!