chore: bump version to v2.18.0

- Add mixed organization strategy for flexible repository mirroring
- Add override options documentation in Organization Strategy component
- Simplify implementation to reuse existing database fields

package.json

@@ -1,7 +1,7 @@
 {
   "name": "gitea-mirror",
   "type": "module",
-  "version": "2.17.0",
+  "version": "2.18.0",
   "engines": {
     "bun": ">=1.2.9"
   },