Add Baden, Switzerland forecast location

[samu123368]

Summary

• add Baden, Aargau to Switzerland's national Forecast Channel location list
• include the existing seven PAL-language name and canton fields
• use the same national-location visibility settings as nearby Aarau

Why

Baden is not currently present in the Switzerland list, while Aarau is the only existing Aargau location. Adding Baden gives users in and around the Baden district a closer selectable forecast point with the national forecast features.

Coordinates: GeoNames — Baden, Aargau (47.47333005480522, 8.30592155456543).

Validation

• parsed weather.xml successfully
• confirmed exactly one Baden entry
• confirmed no duplicate Swiss city names
• confirmed latitude/longitude ranges
• git diff --check passes
• local Go build was not run because the Go toolchain was unavailable; repository CI can perform the full generator checks

AI assistance

This small XML contribution was prepared with AI assistance and reviewed against the existing Switzerland schema and GeoNames coordinates.