Move plugin files from repo root to plugin directory

- Move docs/TODOIST_AUTOSYNC_DESIGN_OPTIONS.md to dbludeau.TodoistNoteplanSync/docs/
- Remove NEW-FEATURES.md from root (duplicate of plugin version)
- Remove update-todoist-live.sh (dev script not for PR)
- Remove .claude/settings.local.json (local settings)
- Add .claude/ to .gitignore to prevent accidental commits of local settings

Addresses PR feedback to keep plugin files within plugin directory.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: felciano

.claude/settings.local.json

@@ -24,4 +24,6 @@ Documentation-Helpers
 **/react.*.dev.js
 **/react.*.min.js
 .windsurfrules
-CLAUDE.md
+CLAUDE.md
+.claude/
+**/.claude/