feat(i18n): add Turkish (tr) interface locale

[4ni1ak]

Summary

Adds Turkish as a shipped interface locale.

Split out of #802 at your request — that PR is closed and its five parts are now
independent.

Changes

openlogi-ui

• New locales/tr.yml carrying every key en.yml defines.
• tr ("Türkçe") registered in SUPPORTED, between Svenska and Ελληνικά —
  native-name alphabetical within the Latin block, matching the picker order the
  constant documents.
• Added to locale_files_have_the_same_keys's include_str! table. That list is
  hand-written and asserts its own coverage against SUPPORTED, so a locale left
  out of it fails the build rather than silently going unchecked.
• maps_locale_variants gains tr and tr-TR.

crowdin.yml

• tr added to export_languages and mapped tr -> tr, so the catalog
  round-trips like every other one.

Values are a best-effort human translation, not machine fill-in; Crowdin can
refine them from here.

Testing

Linux, x86_64, Rust 1.98.0:

cargo test -p openlogi-ui locale     # catalog parity + negotiation
cargo test -p openlogi-desktop i18n  # end-to-end key resolution
cargo fmt --all -- --check
cargo clippy --workspace --all-targets -- -D warnings   # RUSTFLAGS=-D warnings
cargo test --workspace

All green.

Not run on this host: tests (macos), cargo-deny, and macOS clippy (no
macOS SDK here). No hardware verification applies — this adds no device code.

Note on ordering: if the Linux package-manager update PR lands first, it adds
one string to every catalog that exists at that point, so this branch needs a
rebase to pick it up in tr.yml before the parity test passes. Happy to rebase
whenever it suits you — same in the other direction.

[greptile-apps]

Greptile Summary

Adds Turkish as a shipped interface locale.

• Registers Turkish in locale negotiation and the language picker.
• Adds a complete Turkish translation catalog to locale parity checks.
• Configures Turkish import and export in Crowdin.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
.config/crowdin.yml	Adds the Turkish locale to Crowdin export and filename mapping.
crates/openlogi-ui/locales/tr.yml	Adds the Turkish translation catalog with the expected source keys.
crates/openlogi-ui/src/locale.rs	Registers Turkish, verifies catalog parity, and tests Turkish locale negotiation.

_{Reviews (2): Last reviewed commit: "feat(i18n): add Turkish (tr) interface l..." | Re-trigger Greptile}

[AprilNEA]

Thanks.