[Enhancement] In .strings file downloads, maintain key order, comments, and blank lines against in-repo dev language template

[importRyan]

Our Siri-driving AppShortcuts.strings file is carefully organized to align with how our Shortcuts are declared in code. This makes it easier to match edits between .strings and .swift.

Localazy downloads, however, are alphabetically ordered by key, not by the original / existing-in-repo key order. Blank lines are ignored. This makes analyzing diffs and verifying correctness more difficult than necessary.