Add support for Andorra TIN

[unho]

• https://www.oecd.org/tax/automatic-exchange/crs-implementation-and-assistance/tax-identification-numbers/Andorra-TIN.pdf
• https://www.impostos.ad/images/stories/docs/NRT_Passama.pdf

Examples found on the web:

• A700071W
• A700527F
• A-700555-R
• A-700747-F
• A-700814-R
• A-701315-C
• A701485T
• A-702792-H
• A-703168-T
• A-704683-Z
• A-704834-X
• A-705 321-C
• A-706010-J
• A-707871-V
• A-710.646-J
• D059888N
• D-800044-K
• D-800383-X
• F-000429-F
• F-037945-M
• F-044646-J
• F-175669-X
• F-221117-V
• F-245998-L
• L-701412-V
• L-702597-Z
• L-706185-U
• L-707969-P
• L-709222-X
• L-709418-H
• L709811-C
• L-709869-T
• L-710605-S
• L-711019-X
• L-711063-H
• L-711847-V
• L-712255-G
• L-712456-J
• L-713298-F
• O-801585-O
• U-132950-X
• U-186013-P
• U800301-M
• U-800428-R
• U-800584-Z
• U-801585-U
• U-801663-B
• U-801667-X

(below might be placeholder examples, in other words I am not sure they are actual Andorra TIN numbers)

• A-123456-X
• L-700456-A
• F-023871-V

[unho]

I have contacted the email address listed in https://www.oecd.org/tax/automatic-exchange/crs-implementation-and-assistance/tax-identification-numbers/Andorra-TIN.pdf as contact address to ask for the algorithm to calculate the control letter, but they replied me that they don't have such info.