Nice to have - improved address validation error messages based on dpv_footnotes and footnotes

[hartsick]

For returned matches, we get information that may be helpful to surface to people, especially if we are correcting their addresses or their matched address is determined undeliverable (dpv_match_codeD).

Documentation:

• DPV Footnotes
• Footnotes

We might consider pairing this with more permissive match strategies.