chore: bump workspace version to 0.8.0

Changelog-None:

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jb55

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 resolver = "2"
-package.version = "0.7.1"
+package.version = "0.8.0"
 members = [
     "crates/notedeck",
     "crates/notedeck_chrome",