chore: update .gitignore to include advent-of-code-tracker.json and rename guides-tracker.json

Author: wiktoriavh

.gitignore

@@ -19,8 +19,9 @@ yarn-error.log*
 !.env.production
 !.env.example
 
-# guides tracker
+# tracker
 guides-tracker.json
+advent-of-code-tracker.json
 
 # Docker
 docker-compose.yml