basic postgresql support

[avioletheart]

i don't really expect this to be merged, but if anyone wants to run the server on postgres here's a patch that might work. i did do a little testing (can create a regular/sandbox game, can perform basic moves, can create new timelines) but nothing extensive

[Oliveriver]

Ideally I would like to support both providers and switch between them based on a value in app settings. But it looks like the migrations differ.

The solution would be to remove migrations from source control and have users create one themselves, which would have the added benefit of speeding up the database update massively because it won't have to run all the old migrations. I gather though that this is supposedly bad practice.

[avioletheart]

oh, are the migrations generated somehow? that's good to know 😅 i am not really familiar with efcore, just changed things until it worked
it's probably possible to have support multiple providers by removing migrations from source control, i will look into it