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/ga/libcosmic_yoda.ftl

@@ -0,0 +1,34 @@
+close = Dún
+license = Ceadúnas
+links = Naisc
+developers = Forbróirí
+designers = Dearthóirí
+artists = Ealaíontóirí
+translators = Aistritheoirí
+documenters = Doiciméadóirí
+january = Eanáir { $year }
+february = Feabhra { $year }
+march = Márta { $year }
+april = Aibreán { $year }
+may = Bealtaine { $year }
+june = Meitheamh { $year }
+july = Iúil { $year }
+august = Lúnasa { $year }
+september = Meán Fómhair { $year }
+october = Deireadh Fómhair { $year }
+november = Samhain { $year }
+december = Nollaig { $year }
+monday = Dé Luain
+tuesday = Dé Máirt
+wednesday = Dé Céadaoin
+thursday = Déardaoin
+friday = Dé hAoine
+saturday = Dé Sathairn
+sunday = Dé Domhnaigh
+mon = Lua
+tue = Mái
+wed = Céa
+thu = Déa
+fri = Aoi
+sat = Sat
+sun = Dom