Add documentation for MariaDB users

[ottok]

Describe this PR

I have never used Prisma before, and it took me quite a lot of extra effort to figure out if Prisma supports MariaDB at all because the documentation was only mentioning MySQL. After some digging, I found that indeed Prisma uses both https://www.npmjs.com/package/mariadb for the connector and https://hub.docker.com/_/mariadb as part of the CI, and MariaDB support is actually excellent.

Sequalize has very clear MariaDB documentation, and if you merge this PR then Prisma will be on-par.

Changes

Each commit is atomic and carefully documented - please review this PR by looking commit-by-commit looking at the message and the change at the same time.

Looking at git log in 500-databases and e.g. 4358a4169ef3ff042d70b825a9cf3e16bf71e48e seems you prefer to squash when merging. Please merge this PR as-is without squashing to avoid loosing the per-commit documentation.

I am also happy to iterate on the contents of this PR based on your feedback. I am also happy to rebase frequently.

[vercel[bot]]

@ottok is attempting to deploy a commit to the Prisma Team on Vercel.

A member of the Team first needs to authorize it.

[ottok]

Hi!

Thanks for reply. If you don't want a new page, can you share if you can accept the other commits in this PR so I can prepare them for merge?

[ottok]

Closing this as #5713 was merged.