newFeature: Add configuration option to control case-insensitive under oracle tenant

[yuanoOo]

Summary

close #64

Solution Description

• This issue only exists under oracle tenant
• There are no integration tests in the code since OceanBase enterprise version doesn't seem to provide a docker image.

[CLAassistant]

All committers have signed the CLA.

[whhe]

Thanks for your contribution! I left some comments.

Before merging this pr, you also need to sign the CLA following the CLAassistant's comment above. And it's also necessary to add an integrated test case for the new introcuded option.

[yuanoOo]

Thanks for your contribution! I left some comments.

Before merging this pr, you also need to sign the CLA following the CLAassistant's comment above. And it's also necessary to add an integrated test case for the new introcuded option.

• 1、I have already signed the CLA, but the page keeps showing that I have not signed it...
• 2、About integration testing, the oceanbase community version does not support Oracle tenants, and the enterprise version does not seem to provide docker images. Do you have any advice。

[whhe]

Thanks for your contribution! I left some comments.
Before merging this pr, you also need to sign the CLA following the CLAassistant's comment above. And it's also necessary to add an integrated test case for the new introcuded option.

• 1、I have already signed the CLA, but the page keeps showing that I have not signed it...
• 2、About integration testing, the oceanbase community version does not support Oracle tenants, and the enterprise version does not seem to provide docker images. Do you have any advice。

The CLA check is passed now. For testing part, you can add a test case, execute it locally but skip it in GitHub CI, just like OceanBaseOracleDynamicTableSinkITCase.