Add starrocks dialect

[barloc]

This PR introduces a new Starrocks dialect (https://www.starrocks.io/).
It uses mysql-go driver, but with new DDL for migrations table.

[ashwin-weave]

@mfridman Can we prioritise this? We have similar use case.

[saiteja2021]

Thanks for adding StarRocks support..!!
we are also waiting for this PR to be merged.

[barloc]

Hi. On new version 3.3.2 is issue with default current_timestamp StarRocks/starrocks#50872 :(

[mfridman]

Hi. On new version 3.3.2 is issue with default current_timestamp StarRocks/starrocks#50872 :(

I presume this just means we have to pin to a specific version, and then upgrade whenever it's resolved. A bit surprised because I don't think we're using any fancy database features, goose is intentionally kept simple to support as many databases.

Either way, happy to merge this as I see there's a few requests. Thanks for the contribution.

[mfridman]

A few merge conflicts, but otherwise this should be good to go. Please merge master and run go mod tidy.