yoda: re-apply hard rename — libcosmic → libcosmic-yoda (0.1.0-yoda)

Reverts the soft-fork pivot (6736a596). Strategy chosen with user:
full cascade fork. Every consumer (leyoda/cosmic-files + each leyoda/app)
depends on libcosmic-yoda by explicit path, so there are no transitive
deps left asking for the upstream 'libcosmic' crate — no [patch]
unification issues, no two-version traps.

Changes:
- Cargo.toml: name = libcosmic-yoda, version = 0.1.0-yoda
- i18n/*/libcosmic.ftl -> libcosmic_yoda.ftl (71 locales)
- examples/*/Cargo.toml dep refs back to libcosmic-yoda
- compat stub features (winit=[], x11=[]) kept for upstream deps that
  might still request them during the migration window

cargo check --lib passes.

i18n/sv/libcosmic_yoda.ftl

@@ -0,0 +1,34 @@
+license = Licens
+links = Länkar
+developers = Utvecklare
+designers = Designers
+artists = Konstnärer
+translators = Översättare
+documenters = Skribenter
+close = Stäng
+january = Januari { $year }
+february = Februari { $year }
+march = Mars { $year }
+april = April { $year }
+may = Maj { $year }
+june = Juni { $year }
+july = Juli { $year }
+august = Augusti { $year }
+september = September { $year }
+october = Oktober { $year }
+november = November { $year }
+december = December { $year }
+monday = Måndag
+tuesday = Tisdag
+wednesday = Onsdag
+thursday = Torsdag
+friday = Fredag
+saturday = Lördag
+sunday = Söndag
+sun = Sön
+mon = Mån
+tue = Tis
+wed = Ons
+thu = Tor
+fri = Fre
+sat = Lör