* feat: add ttl for clickhouse setup in signoz

* feat: added ttl for metrics table
Signed-off-by: Yash Sharma <yashrsharma44@gmail.com>

* feat: changed the api to use type and duration as params
Signed-off-by: Yash Sharma <yashrsharma44@gmail.com>

* added a getter for ttl endpoint
Signed-off-by: Yash Sharma <yashrsharma44@gmail.com>

* added a feature to retunr ttl for both metrics and traces
Signed-off-by: Yash Sharma <yashrsharma44@gmail.com>