[FEA] Support spark.sql.parquet.int96RebaseModeInWrite= LEGACY

[tgravescs]

Is your feature request related to a problem? Please describe.
It would be nice if we could support spark.sql.legacy.parquet.int96RebaseModeInWrite=LEGACY as some customers use this and its default on Databricks

Note the definition of this config:

When LEGACY, Spark will rebase INT96 timestamps from Proleptic Gregorian calendar to " +
        "the legacy hybrid (Julian + Gregorian) calendar when writing Parquet files. " +
        "When CORRECTED, Spark will not do rebase and write the timestamps as it is. " +
        "When EXCEPTION, which is the default, Spark will fail the writing if it sees ancient " +
        "timestamps that are ambiguous between the two calendars."

Also note this config was renamed and used to be in Spark 3.1: spark.sql.legacy.parquet.int96RebaseModeInWrite. 3.2 changed to use the new conf spark.sql.parquet.int96RebaseModeInWrite. The old configuration will still work but is deprecated

[tgravescs]

Note we have issues for datetimeRebase #8596