Add extra configuration to `ParquetExec` to support saveModes

**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
Currently `ParquetExec` is not flexible and behaves like `ErrorIfExists` save mode, would be nice to implement other save modes like in Spark https://spark.apache.org/docs/latest/api/java/index.html?org/apache/spark/sql/SaveMode.html

**Describe the solution you'd like**
Add save modes to parquet writer

**Describe alternatives you've considered**
Not doing this

**Additional context**
None

Start by locating ParquetExec and the parquet writer, then compare the requested behavior with Spark's SaveMode documentation linked in the issue. Define which save modes are supported and verify that each mode produces the expected writer behavior before considering the issue done.

Written by the indexing model from the issue text.