Support for non-MySQL DBs

Re-roll #5 🐛 Support for non-MySQL DBs Needs review to be compatible with #3296984 Update module to be D10 compatible.

Thanks for the re-roll Aman! Updating description with some links to why MySQLisms are discouraged.

Looks good to me - we (note - I am a colleague of xurizaemon and amanp) have been using this patch on a site with postgres for several years.

Chris Burgess (xurizaemon), amanp - Thank you for your work, but unfortunately the module has undergone some changes, so we need to modify the patch.

@aman is MR8 ready for review? I see MR is open but issue still set to needs work - looks good and most importantly is working from an initial test - ping me if you want a review