rename: libcosmic → libcosmic-yoda (fork 0.1.0-yoda)

Fork point: pop-os/libcosmic 1.0.0 + perf/quickwins-bundle + macOS
window controls feature. From here the crate diverges under the yoda
lineage with its own versioning.

Changes:
- Cargo.toml: name = libcosmic-yoda, version = 0.1.0-yoda
- [lib] name = cosmic kept unchanged — consumer code still does 'use cosmic::...'
- examples/*/Cargo.toml: updated all libcosmic dep references to libcosmic-yoda
- i18n/*/libcosmic.ftl renamed to libcosmic_yoda.ftl (71 locales) to match
  the new name expected by fluent_language_loader!() macro

cargo check --lib passes. Examples not yet validated — Phase 2 (Wayland-only
cut) will rework them anyway.

i18n/fi/libcosmic_yoda.ftl

@@ -0,0 +1,34 @@
+monday = Maanantai
+mon = ma
+tuesday = Tiistai
+tue = ti
+wednesday = Keskiviikko
+wed = ke
+thursday = Torstai
+thu = to
+friday = Perjantai
+fri = pe
+saturday = Lauantai
+sat = la
+sunday = Sunnuntai
+sun = su
+close = Sulje
+license = Lisenssi
+links = Linkit
+developers = Kehittäjät
+designers = Suunnittelijat
+artists = Artistit
+translators = Kääntäjät
+documenters = Dokumentoijat
+january = Tammikuu { $year }
+february = Helmikuu { $year }
+march = Maaliskuu { $year }
+april = Huhtikuu { $year }
+may = Toukokuu { $year }
+june = Kesäkuu { $year }
+july = Heinäkuu { $year }
+august = Elokuu { $year }
+september = Syyskuu { $year }
+october = Lokakuu { $year }
+november = Marraskuu { $year }
+december = Joulukuu { $year }