[FEATURE] Introduce `escape_sql_identifier` to safely escape SQL identifiers like table, view and column names

See the code in ucx: https://github.com/databrickslabs/ucx/blob/125ccfa19b3f3bb3569e576b2f38ed4d62d13330/src/databricks/labs/ucx/framework/utils.py#L7.

Also use it in lsql where appropriate 

Add it to backends or utils. Decide on what makes sense most