Add multi-zone distance service rates

[roncodes]

Summary

Adds a generic first-class multi_zone_distance service-rate calculation method for routes that cross multiple priced zones or service areas.

Changes

• Stores generic geographic pricing rule metadata on service rate fees.
• Prices route distance by sampling route legs against configured service-area/zone polygons, honoring rule priority and fallback pricing.
• Adds per-zone quote line items for reviewable pricing.
• Exposes the method in the FleetOps service-rate form/details UI.
• Fixes preliminary quote currency filtering so the submitted currency value is used.

Validation

• php -l on touched PHP files
• php-cs-fixer fix --dry-run --diff --config=.php-cs-fixer.php on touched PHP files
• npm run lint:js -- addon/components/service-rate/form.js addon/routes/operations/service-rates/index.js addon/utils/fleet-ops-options.js
• npm run lint:hbs -- addon/components/service-rate/form.hbs addon/components/service-rate/details.hbs
• git diff --check