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/zh-Hans/libcosmic_yoda.ftl

@@ -0,0 +1,34 @@
+close = 关闭
+license = 许可证
+links = 链接
+developers = 开发者
+designers = 设计师
+translators = 译者
+january = { $year }年1月
+february = { $year }年2月
+march = { $year }年3月
+april = { $year }年4月
+may = { $year }年5月
+june = { $year }年6月
+july = { $year }年7月
+august = { $year }年8月
+september = { $year }年9月
+october = { $year }年10月
+november = { $year }年11月
+december = { $year }年12月
+monday = 星期一
+tuesday = 星期二
+wednesday = 星期三
+thursday = 星期四
+friday = 星期五
+saturday = 星期六
+sunday = 星期日
+artists = 艺术家
+documenters = 文档作者
+mon = 周一
+tue = 周二
+wed = 周三
+thu = 周四
+fri = 周五
+sat = 周六
+sun = 周日