Add Canada VAT rules with province-specific rates#10

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johngathure wants to merge 9 commits intomasterfrom

enhancement/9-canada-vat-rates

Commits on Nov 18, 2025

Add Canada VAT rules with province-specific rates based on postal codes.

johngathure
and
claude
committed

Commits on Feb 24, 2026

Commits on Apr 10, 2026

update rates and fix tests.
johngathure
committed