clear-all.sh should delete offline path configured in the `taskmanager.properties`

**Describe the feature you'd like**

Currently we assume the `offline.path` is `/tmp/openmldb_offline_storage/`.

We should parse the config and delete accordingly:
- file://
- hdfs://

**Additional context**

Add any other context or screenshots about the feature request here.

Find the clear-all.sh script and the taskmanager.properties configuration file. Understand how to parse the offline.path property, which may include file:// or hdfs:// URIs. Implement logic to delete the configured offline storage path, handling both local files and HDFS. Test the script to ensure it correctly reads the config and performs the deletion.

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