Feature xugu database and fix excel exception

[mrliufox]

Purpose of this pull request

Fix the following two issues： [1]An exception was thrown when importing an empty cell [2]If multiple rows of data are imported, all the data is the last row

Does this PR introduce any user-facing change?

NO

How was this patch tested?

Import excel with multiple pieces of data and empty cells to verify that the data can be successfully imported

Check list

• [ ] If any new Jar binary package adding in your PR, please add License Notice according New License Guide
• [ ] If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• [ ] If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• [ ] Update the release-note.

[hailin0]

waiting for ci passed

[hailin0]

@mrliufox Seems like duplicate of #5886? If so, please close one of them

[hailin0]

Please fix ci error