This commit only adds the ExportPath class.

- Adds ParquetWriter
- Adds RowWriteSupport

However, there are still some more changes needed:

  - Decide on decimal to int32 or int64 based on precision
  - Improve the import functionality with date and timestamps

…unds

Should fix #15

This does not make sense in this case, because both when reading or writing exasol will provide
correct Java type, e.g, BigDecimal if decimal with precision and scale and regular Integer or Long
if int32 or int64.

….math.BigDecimal`.

S3AFileSystem somehow requires local temp directory, before uploading to S3. This currently only
tested for AWS S3. I will update this for GCP or Azure if they require this filesystem when
performing tests for those platforms.

An example date was: `0001-01-01`, or in general days before 1970.

After writing this `0001-01-01` as a days since epoch and when reading back I was getting
`0001-12-31`.

The solution was to incorporate the timezone offset millis and take the *floor* of the millis per
day.