[Enhancement] writing a test tool which generate random operations to test ccr

[dataroaring]

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• I had searched in the issues and found no similar issues.

Description

including ddl which are listed in https://doris.apache.org/docs/dev/admin-manual/data-admin/ccr/feature.

Solution

Given a db or a table, tools generate random ddl on random tables or random columns. Writing can be done by other tools.

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

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